pls answer soon 8th grade science

Pls Answer Soon 8th Grade Science

Answers

Answer 1

Answer: 1. Is true 2. is false 3. Is true 4 is true 5. Is false 6. Is true 7. Is false 8. Is true 9. Is true 10 is false 11. Is false

I couldn’t answer so I just commented the answers to part 1

Part b. 12. B, 13. E, 14. A, 15. D, 16. C.

now I did as a actua answer

Explanation:


Related Questions

As soil particle size decreases, capillary action will​

Answers

Answer:

Increases

Explanation:

The smaller is the size of the soil, the greater is the interspace distance between the two soil particles. As this distance increases, the water gets more space to travel through thereby increasing the capillary action. Hence, as the size of soil particle reduces, capillarity increases.

Beneficial bacteria are found in our digestive tract
A. true
B. False

please help

I will give brainliest and 5 * and 10 points for the best answer

I don't want to see an link if I do you will be reported

Answers

Answer:

A

Explanation:

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The answer is (A)true, because there are bacteria in your digestive tract that is helpful and your body does not attack them.

What are mushrooms? ಥ‿ಥ​

Answers

mushrooms are funguses that need the dark to grow

mushrooms can be poisonous sometimes

mushrooms are like a thing that grows in the ground.

Compare blood cells to plant cells

Answers

Answer:

Plant cells are encompassed by a rigid cell wall, while human white blood cells have a plasma membrane.

Explanation:

Animals with which type symmetry 'conquered' the land?

Answers

I agree with the person above

plzzzz help
Commensalism is a symbiotic relationship in which one organism benefits and the other organism neither benefits nor is harmed.
Mutualism is a symbiotic relationship in which both organisms benefit.
Parasitism is a symbiotic relationship in which one organism benefits and the other organism is harmed.
Predation is a relationship in which one organism preys on (and eats) another organism.
Competition is relationship in which two organisms must fight (directly or indirectly) for resource

Objective:
Given a description of the relationship between two organisms, determine if their relationship is competition, commensalism, predation, mutualism, or parasitism.

1. Polar Bear and Seal: A polar bear hunts and captures the seal for its food. _______________________________

2. Lice and Humans: Lice attach to human hair and enjoy the warmth given off by the human. They eat tiny amounts of human blood, causing the human to have little red bumps that are quite itchy. They may also transmit disease to the human. _______________________________

3. Male lions: Adult male lions will fight each other for control over a pride and mating rights. _______________________________

4. Goby Fish and Sea Urchins: The goby fish live amongst the sea urchins and are provided protection from their predators. _______________________________

5. Wolf and Caribou: The wolf hunts and kills the caribou for its food. _______________________________

6. Bats and White-Nose Fungus: The fungus grows over the bat’s face during hibernation which can kill the bat or cause it to wake up from hibernation early and starve. ____________________________________

7. Hermit Crabs and Snails: Hermit crabs live in abandoned shells made by snails. _______________________________

8. Boxer Crab and Anemone: The boxer crab carries a pair of small anemones in its claws. When a predator approaches, it waves the anemones around which present its stinging tentacles and deters the predator. The anemones get small particles of food from the crab when it eats. _______________________________

9. Bear and Salmon: The bear catches salmon in the river and eats it for food. _______________________________

10. Grass and Oak Trees: Oak trees grow tall and put their branches out wide to collect sunlight. This shades the grass growing underneath from getting sunlight. _______________________________

11. Mycorrhizal Fungi and Plants: The mycorrhizal fungus grows into the roots of some plants and gets nutrients from the plant. The fungus helps the plant absorb inorganic nitrogen and phosphorus from the soil. Some fungi also secrete antibiotics, which can help protect the plant from parasitic fungi and bacteria. _______________________________

12. Bison and Cowbird: As bison walk through the grass, it kicks up insects like grasshoppers. These are seen and eaten by the cowbird. _______________________________

13. Mistletoe and Oak Tree: Mistletoe extracts water and nutrients from the oak tree, causing harm to the oak tree. _______________________________


14. Frog and Insect: The frog uses its long, sticky tongue to catch insects for food. _______________________________

15. Tapeworm and Dog: The tapeworm enters the dog when the dog eats feces containing tapeworm larvae. The tapeworm attaches to the dog’s stomach and feeds off of the dog’s nutrients. This often causes harm to the dog. _______________________________

Answers

Answer:

1. predation

2. parasitism

3. competition

4. commensalism

5. predation

6. parasitism

7. commensalsim

8. mutualism

9. predation

10. mutualism

11. mutualism

12. mutualism

13. parasitism

14. predation

15. parasitism

hope I helped!:)

Answer:

Oi felix~~

Explanation:

What are Tectonic Plates made of and what do they do?

Answers

Answer:

They move

Explanation:

Answer:

A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.Plate tectonics move because they are carried along by convection currents in the upper mantle of the planet (the mantle is a slowly flowing layer of rock just below Earth's crust). Hot rock just below the surface rises and when it cools and gets heavy, it sinks again.

Explanation:

Which is involved in refraction? A. colors B. shadows C. speed of light D. absorption of light

Answers

the speed of light involved in refraction

How do toothed whales produce general communication sounds?

Answers

Answer:Toothed whales do not make the long, low-frequency sounds known as the whale song. Instead they produce rapid bursts of high-frequency clicks and whistles. Single clicks are generally used for echolocation whereas collections of clicks and whistles are used for communication.

DNA double helix. Hydrogen bonds break and helix opens. Each strand of DNA acts as a template for synthesis of a new, complementary strand. Replication produces two identical DNA double helices, each with one new and one old strand.

Answers

Answer:

The process described above is known as DNA replication.

Hope this helps you! Have an amazing day!

is gold a insulator or a Conductor​

Answers

Answer:

Hey mate......

Explanation:

This is ur answer......

Gold is a poor insulator and a good conductor, having a resistivity of 22.4 billionths of an ohm-meter. As with lead, gold is widely used to make electronic contacts. Unlike many other metals, it is very chemically stable and resists the corrosion that degrades other types of electrical connectors.

Hope it helps!

mark me brainliest pls.......

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the act of doing what's best for the group is called__​

Answers

Answer:

being a team player :)

Explanation:

The act of doing what's best for the group is called altruism. This is an act of selflessness were the practice of concern is for the welfare of others.

(from go ole)

How does an orchid benefit from growing in a tree?

Answers

Answer:

The orchids benefit in several ways. They get more sunlight and are more easily visited by the moths which pollinate them.Orchids do not harm the trees they grow in. Their roots stay on the bark of the tree; they do not take water or nutrients from the tree.

3) What template have you chosen to use and why

Answers

Answer:

be more speific in your question

Explanation:

1) Read the following paragraph and answer the following questions.
The countries which do not have oil reservoirs in their land, import oil from other countries. But sometimes during transportation of oil through sea routes, accidental oil spill occurs. This oil spilled in the ocean may prove fatal and toxic to aquatic animals. Therefore, removal of this spilled oil is essential for protection of aquatic life. For removing this oil layer, certain microbes like Pseudomonas spp and Alcanivorax borkumensis are used. These microbes have the ability to destroy the pyridines and other toxic chemicals. The hydrocarbonoclastic bacteria (HCB) are able to decompose the hydrocarbons and bring about the reaction of carbons with oxygen resulting in formation of CO​2​ and water. Like oil spills cause damage

to aquatic life, plastic forms the major part of the garbage on the land. Plastics are difficult to degrade as they are made up of PET, by research various species like Vibrio and Ideonella sakaiensis which can degrade PET have been identified. There are certain species of microbes which can decompose rubber from garbage.
a) How are aquatic organisms affected by oil spills in the ocean?
b) Which type of chemical compounds are degraded by microbes used for
clearing oil spills?
c) Name any two species of microbes which can degrade rubber from
garbage.
d) Why should there be a ban on plastic bags?

Answers

Answer: See explanation

Explanation:

a) How are aquatic organisms affected by oil spills in the ocean?

Aquatic organisms are affected by oil spilled as it is fatal and toxic to them. It can cause death, habitat degradation, vulnerability to predators and can also lead to the inability to hatch their eggs.

b) Which type of chemical compounds are degraded by microbes used for

clearing oil spills?

The chemical compound degraded by microbes are clearing oil spills are Pseudomonas spp and Alcanivorax borkumensis.

c) Name any two species of microbes which can degrade rubber from

garbage.

These are Vibrio and Ideonella sakaiensis.

d) Why should there be a ban on plastic bags?

There should be a ban on plastic bags as they're difficult to degrade as they are made up of PET.

Imagine that there is a loss-of-function mutation in the gene for the Notch receptor in the progenitor cell of C. elegans. How does that mutation affect vulva development

Answers

Answer:

Hello your question is incomplete attached below is the complete question

answer :  

None of the progenator cells differentiate into type 2 cells. ( A )

Explanation:

Due to the loss-of- function mutation in the gene for the Notch receptor in the progenitor cell of C elegans , This causes The progenator cells for type 1 to be  differentiated to type 1 cells but the cells for type 2 will not be differentiated.

hence the answer is  : None of the progenator cells differentiate into type 2 cells.

Which correctly lists the terms in order of increasing complexity? (I will give brainliest to the first person who answers)

A. population, community, ecosystem, biosphere
B. community, population, ecosystem, biosphere
C. biosphere, ecosystem, community, population
D. ecosystem, biosphere, community, population

Answers

Answer:

C

Explanation:

The order goes as;

Biosphere, Ecosystem, Community, Population.

Starfish are echinoderms, a term that means spiny skin. The rough covering serves as a natural barrier and protects the starfish from predators and the environment. What system includes skin?

Answers

Shawn is mayonnaise an instutment

Why are flowers so important to a plant?

Answers

Answer: Flowers help purify water and also helps hold the soil in place and prevent erosion.

CREDIT: fed.us

Answer:

The primary purpose of a flower is reproduction. Since the flowers are the reproductive organs of plant, they mediate the joining of the sperm, contained within pollen, to the ovules — contained in the ovary. Pollination is the movement of pollen from the anthers to the stigma.

Explanation:

What type of muscle tissue is this

Answers

Answer:

It is skeletal muscle tissue also if you see my comment spread the word.

Explanation:

3) identify and describe three abiotic characteristics of ecosystems. Give an example of how each

characteristic could be affected by a human activity

Answers

Answer:

The abiotic characteristics of an ecosystem that affects man includes: Land surface, rainfall and relative humidity.

Explanation:

In the ecosystem, man occupies the terrestrial habitat which is affected by the abiotic factors listed above.

Abiotic (non- living) factors determine the type of biotic (living) community that is found in an ecosystem. These factors include Land surface, rainfall and relative humidity, just to mention a few.

--> LAND SURFACE: This is responsible for the marked variation in the vegetation of a place. For example, a mountain in the tropics may have a rain forest vegetation at it's base and an afroalpine vegetation near its peak. The gradient of the slope affects the growth of organisms. A steep slope encourage fast run - off of water and therefore encourages erosion, which results in shallow and infertile soil. This in turn AFFECT man's farming activities as there would be little to no crop yield.

--> RAINFALL: Water is a very important abiotic factor that affects life. The main source of water to terrestrial habitat is rainfall. When rain falls, a greater percentage of it sinks into the soil while the rest run- off into water bodies. Water is absorbed by root hairs into the plant and used for photosynthesis to produce food. The absence of rainfall in the environment of man could lead to drought which AFFECTS man negatively.

--> RELATIVE HUMIDITY: This is a measure of the amount of moisture in the atmosphere. It's usually high in hot wet regions. It affects the rate at which water evaporates from the body surfaces of organisms. Low relative humidity cause more water (sweat) to evaporate from body surfaces giving the human body a cooling effect. But in high relative humidity, the sweat cannot evaporate leaving the body feeling hot and sticky. This AFFECTS man as the body tries to cool off in a harder way by increasing rate of respiration and depth of blood circulation.

The diagram below shows a diploid cell with two homologous pairs of chromosomes. Due to independent assortment and crossing-over, the possible allelic combinations that could be found in gametes by the meiotic division of this cell are _________________.

A
Bb, Dd, BB and DD
B
BD, bD, Bd and bd
C
BBDd and BDbd
D
Bd and bD only

Answers

Due to independent assortment and crossing-over, the possible allelic combinations found in gametes by the meiotic division of this cell are B and D can be on one chromosome, while b and d can be on the other. Therefore, the correct answer is (B) BD, bD, Bd, and bd.

What is crossing-over?

Crossing-over is a process that occurs during meiosis, the cell division process that produces gametes (sperm and egg cells) in sexually reproducing organisms. During crossing-over, homologous chromosomes exchange genetic material, resulting in the creation of new combinations of alleles.

What is the law of independent assortment?

The law of independent assortment is a fundamental principle in genetics that describes how different genes are inherited independently. Gregor Mendel first proposed this principle.

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can anyone help me with this question?

Answers

Answer: Organic chemicals can contribute to local and regional losses of freshwater biodiversity and ecosystem services. ... Organic chemicals were likely to exert acute lethal and chronic long-term effects on sensitive fish, invertebrate, or algae species in 14% and 42% of the sites, respectively.

Explanation:

The immune response generates some side effects that can be unpleasant. what their potential benefits could be?

Answers

The ability to recognize, respond to, and remember a variety of pathogens.

4.
What is the salinity of seawater?
1.5 percent
3.5 percent
10 percent
5.5 percent

Answers

Answer:

I think the answer is 3.5%

Explanation:

35 parts per thousand of seawater contains salt therefore your answer is 3.5

The diagram shows the same type of molecules in area A and area B.

With the passage of time, some molecules move from area A to area B. This movement is the result ot the process of

1. phagocytosis
2. pinocytosis
3. diffusion
4. cyclosis​

Answers

Answer:

3. diffusion, because molecules are moving from a high concentration(A) to a low concentration(B)

Diffusion is the net flow of matter from a location of high concentration to a region of low concentration as a result of the random mobility of molecules. Both stopping and reversing this process are not possible. Thus, option C is correct.

What are the main mechanism in diffusion process?

The molecules' kinetic energy causes random motion, which causes diffusion. This mechanism happens in simple diffusion without the help of a carrier protein.

The molecules travel from an area of high concentration to an area of low concentration due to their random mobility.

Chemicals flow across the plasma membrane from areas of high concentration to areas of low concentration in cells to maintain an equilibrium (balance) of internal substances.

This implies that if there are more items inside the cell than outside, they will go outside and vice versa. It happens when the medium around the cell contains more water than the cell itself.

Therefore, This movement is the result of the process of diffusion.

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What part of the bacteriophage attaches and anchors itself to the bacteria?

Answers

Answer: Proteins in the "tail" of the phage bind to a specific receptor (in this case, a sugar transporter) on the surface of the bacterial cell. Entry: The phage injects its double-stranded DNA genome into the cytoplasm of the bacterium.

Explanation:

Classification (8A.S, 8B.R, 8C.S]:Question 4
The classifications of four insects are shown in the table. Which two
insects are the most closely related?

Answers

Explanation is in a file.

describe how a non-resistant Staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin

Answers

Explanation:

characteristics of enzymes

S. aureus can develop resistance to methicillin and other -lactam antibiotics by expressing a foreign PBP, PBP2a, which is resistant to methicillin but can perform the functions of the host PBPs.

What is Staphylococcus aureus?

Staphylococcus aureus is a Gram-positive round-shaped bacterium that pertains to the Bacillota and is a popular member of the body's microbiota, commonly found in the upper respiratory tract and on the skin.

S. aureus can develop resistance to methicillin and other -lactam antibiotics by expressing a foreign PBP, PBP2a, which is resistant to methicillin but can perform the functions of the host PBPs.

Thus, in this way a non-resistant Staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin.

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This plant is used to treat liver ailments during the medieval times
Liverworts
Hornworts
Mosses
Ferns

Answers

Answer:

liverworts

Explanation:

Answer:

liverworts

Explanation:

that's were it got its name because of it healing properties

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A pizza cut into 8 pieces cost $10.00.What is the cost per piece? A firm has issued cumulative preferred stock with a $100 par value and a 10 percent annual dividend. For the past three years, the board of directors has decided not to pay a dividend. At the end of the current year, the preferred stockholders must be paid ________ prior to paying the common stockholders. i think i have the answer doing this to make sure :) thank u so much if u answer multiverse mechagodzilla vs pacific rim 2 obsidian fury who will win the number value of 2 in the number 4256 How would the article be different if the section "Question: What Were The Motivations Of The Women You Studied?" came before the section "Question: How Did They Do It?"AThe article would follow more of a chronological structure, by first explaining what might cause a woman to enlist and then describing the process and experience in later sections.BThe article would follow more of a cause-and-effect structure, by outlining the journey of a woman from her first day as a soldier to her reflections on how the experience had changed her life.CThe article would follow more of a problem-and-solution structure, by first describing the challenges female soldiers faced and then detailing how they were able to solve them in later sections.DThe article would follow more of a compare-and-contrast structure, by providing ways that female soldiers were similar to men and then emphasizing the major differences in their experiences. What is the value of x in the equation below?12 2(x-1)=6 If arc ED=(9x-3) , arc BF=(15x-39) and angle BCF=(11x-9) find arc ED How to multiply fractions Giving brainliest to someone who answers this :D plus points too THANK YOU GUYS FOR THE HELP Okay so i have a plot for a weighting idea but I need a name for the book Enemies. The characters begin as enemies. At some point, they are forced to spend time together and begin falling in love.that's the plot so you know the main characters who fall in love are both females! 2 8/100 turned into decimal Read the excerpt from the story Animals in the Zoo."Don't worry, we won't be operating on the tamarins today. We are just checking their health and looking at their eyes, ears, and hands during this visit. We want to make sure they are healthy enough to be put into their enclosure," she said. Just then, a zoo employee brought in the two tamarins, and Ryan immediately understood why they were called cotton-top tamarins. Each of them had a white tuft of hair on top of their head. The zoo employee told Ryan and his mom that these two tamarins were the first of many to come to the zoo. If these two stayed healthy and appeared to be happy in their enclosure, the zoo would be able to get even more tamarins to fill the exhibit which is why they wanted to make sure they had an expert come in to examine them.It took Ryan's mother 30 minutes to check each tamarin. She wanted to make sure they both had thorough examinations. Finally, after an hour, she gave them both the all clear.One of the tamarins was looking right at Ryan and had her arms stretched out. Ryan looked at his mom with an inquiring gaze. She nodded at him, so he reached out and picked her up from the examination table. The tamarin licked the end of his nose, and Ryan laughed. He definitely would be back to visit the tamarins as soon as he could.Which line from the excerpt best supports the idea that Ryan is an animal-lover? A. She wanted to make sure they both had thorough examinations. B. One of the tamarins was looking right at Ryan and had her arms stretched out. C. She nodded at him, so he reached out and picked her up from the examination table. D. He definitely would be back to visit the tamarins as soon as he could. Fill in the blank Vosotros ________ a verdad.A. Dicen B. Decimos C. Decis While playing a computer game that requires you to sort various artifacts, you are shown pieces from a writing system that contain detailedhieroglyphs created sometime around the third century. Which "room" in the game should you MOST likely place these pieces?OA Aztec artOB.Incan artOC. Mayan artOD.Olmec art What is true about renewable resources?They are rare on Earth.They can be replenished fast.They can be replenished over millions of years.They are very abundant on Earth. Cost of a cell phone: $249.50Markup: 30% Which are signs and symptoms of infection? Select all that apply.shrunken lymph nodesinflammationfevertirednessloss of bloodincreased appetitenausea PLEASE HELP ILL MAKE BRAINLIEST ASAPThe amount of money in a bank account increased by 18.5% over the last year. If the amount of money at the beginning of the year is represented by n, which expression represents the amount of money in the bank account after the increase? Select all that apply. A n + 0.185nB n + 18.5nC 1.185nD 0.185nE 18.5nF 19.5n