PLEASE HELP- EASY 7TH GRADE WORK!!!

Why is overpopulation dangerous?

A= There will be no competition for resources.
B= There will not be enough air for all members of the species to breathe.
C= There will not be enough food for all members of the species to survive.
D= Overpopulation will result in drastic climate change.

Answers

Answer 1
The answer is D because overpopulation can ruin our environment and the earth.
Answer 2

Answer:

D= Overpopulation will result in drastic climate change.

Explanation:

overpopulation is bad because the increased demand for resources such as fresh water and food, starvation and malnutrition, consumption of natural resources faster than the rate of regeneration, and a deterioration in living conditions.

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Related Questions

Which statement about the nervous system is true?

Answers

I’m pretty sure it’s A, it works like Electrical Wires
The answer is C. It stores information. This is because The brain is part of your nervous system and of course your brain stores information that you process throughout you body in different ways. (Brainiest me please)

What is the original source of energy for gasoline?
O plants
O Sun
O petroleum
O fossil fuels​

Answers

The original source is the sum

Answer:

Sun

Explanation:

Why a specialized cell does not undergo mitosis?

Answers

Answer:

Because Not all cells divide

Explanation:

What else are extreme sports sometimes called?
O A. Action sports
O B. Adventure sports
O C. Adrenaline sports
D. Both A and B

Answers

A and b are correct

define the general difference between an autotroph and a heterotroph

Answers

Answer:

Explanation:

If we break down the word autotroph, auto means “self” and troph means "feeding" or nourishment. However, when we break the word heterotroph, we get hetero- meaning other, and troph meaning feeders.

This is the critical difference between these two groups. Autotrophs synthesize or make their own food whereas, heterotrophs cannot make their own food thus have to rely on others by eating or absorbing others. For example, plants are autotrophs because they can make their own food using photosynthesis, whereas, humans are heterotrophs because we have to eat others to survive.

Answer:

autotrophs  are organisms that can produce their own food from the substances around them using light or chemical energy

heterotrophs cannot synthesize their own food and rely on other organisms plants and animals for nutrition

Explanation:

Which type of tissue carries messages?
A. Nervous tissue
B. Connective tissue
C. Muscle tissue
D. Epithelial tissue
SUBN

Answers

Answer:

Nervous tissue

Nervous tissue is responsible for carrying messages throughout the body. It is made up of specialized cells called neurons, which are able to transmit electrical signals. These signals allow the body to respond to stimuli and coordinate its movements. Hence option A is correct.

Connective tissue provides support and structure to the body. It is made up of cells that are embedded in a matrix of fibers. The fibers can be made of collagen, elastin, or other proteins. Connective tissue can be found in many different parts of the body, including the bones, muscles, and skin.

Muscle tissue is responsible for movement. It is made up of cells that can contract and relax. There are three types of muscle tissue: skeletal muscle, smooth muscle, and cardiac muscle.

Skeletal muscle is attached to bones and is responsible for voluntary movement. Smooth muscle is found in the walls of internal organs and is responsible for involuntary movement. Cardiac muscle is found in the heart and is responsible for pumping blood.

Epithelial tissue covers the body and lines internal organs. It is made up of cells that are tightly packed together. Epithelial tissue protects the body from infection and helps to regulate body temperature.

To know more about Nervous tissue:

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Which features did you include in your answer? Check all that apply.

It’s specific and testable.

It can be used to form a hypothesis.

It is not based on an opinion or values.

It does not relate to the supernatural.

Answers

Answer:

Well, it's based on your answers, honestly. you did not post them

match the phylum with the animal.

Answers

Answer:

1 - D

2 - A

3 - C

4 - B

Explanation:

Environmental damage due to increased pesticide use

Answers

Answer:

I would say A

Explanation:

1. Did your buoy move as you expected? Explain why or why not.

Answers

Wait did the what move as expected
According to what I know a buoy is a floating object that has many uses or purposes.

Maybe you have a different meaning to help answer the question.

A forest fire in Florida clears thousands of acres of trees. What is the most likely consequence for the animal populations in the surrounding area?

Answers

Answer:

Explanation:

they would die or suffer

What molecule makes the trunk of a tree sturdy?
O A. Fructose
O B. Disaccharide
C. Cellulose
O D. Glucose

Answers

Answer:

C. Cellulose

Explanation:

The answer is Cellulose.

How is DNA used as evidence for evolution?

Answers

Answer:

Hope this helps!!!!!! I tried my best to answer!

Darwin proposed that evolution could be explained by the differential survival of organisms following their naturally occurring variation—a process he termed "natural selection." According to this view, the offspring of organisms differ from one another and from their parents in ways that are heritable, which happen because of the change in DNA!  

Explanation:

Answer:

All species have the same genetic code.

fruit is absent in ?

a.Mango
b.rose
c. pine
d.sunflower ​

Answers

Answer: C: Pine

Explanation: Pine belong to the gymnosperms ( Naked seed plants) group, a group of plants with flower that has no ovary hence no fruit. The seeds are borne naked on scaly structures or leaves surface. Other examples in this group are Conifers, Cycads, Ginkgo e.t.c


A wet mount slide from a sample of Elodea leaf cells and a slide from a sample of red blood cells were initially examined using a light microscope. The remaining
portions of the two cells samples were then placed into a 20% sucrose solution. After 30 minutes, the cells were again examined using a light microscope. Which
statements best describes their appearance?
Your answer:
A. The leaf cells had undergone plasmolysis while the red blood cells had shriveled.
B. The leaf cells were swolle and turgid while the red blood cells remain unchanged.
C. Both the leaf cells and the rat blood cells had swollen and burst.

Answers

The answer is: B
Hope this helps
I think it’s B

Answer:

B

Explanation:

The leaf cells were swolle and turgid while the red blood cells remain unchanged.

When are two populations likely to have very similar allele frequencies?

A. If the selective pressures are different
B. If there is a high mutation rate
C. If there is a large amount of genetic drift
D. If there is a large amount of gene flow

Answers

Answer:

c). If there was a large amount of genetic drift.

If the price of gene drift is excessive enough, then two populations will have equivalent allele frequencies and consequently can be taken into consideration as a single powerful population.

What causes allele frequencies to live equally?

Allele frequencies continue to be constant over the years due to the following: there is no considerable price of a brand new mutation. individuals with all genotypes are similarly able to mate and pass on their genes; that is, there's no choice against any precise genotype.

What are two impacts of allele frequencies of a population?

The natural choice, genetic drift, and gene go with the flow are the mechanisms that purpose modifications in allele frequencies through the years. while one or greater of those forces are appearing in a populace, the populace violates the Hardy-Weinberg assumptions, and evolution occurs.

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Anna applies a force of 84n Nto lift her baby nephew 2.0 m. How much work
does Anna do? Answer


Answers

Answer:

168 J

Explanation:

Work can be calculated using the following formula.

w=f*d

where w is work, f is force, and d is distance.

Anna applied a force of 84 Newtons, and lifted the baby 2.0 meters.

f=84 N

d=2 m

Substitute these variables into the formula.

w=84 N* 2 m

Multiply

w=168 N-m

A N-m is the same as a Joule, or J.

w= 168 Joules

Anna does 168 Joules of work.

What is the purpose of a control sample that is known to be from a given
species in an eDNA surveillance for that species?
A. To identify samples containing the target DNA
B. To produce multiple banding patterns in a gel
C. To amplify the DNA in small samples
D. To identify every species found​

Answers

Answer:

B. To produce multiple banding patterns in a gel

Explanation:

What method is used when you try several different solutions to see what
works?

Answers

Trial and Error

.............................
the answer should b trail and errors

Raising more sustainable fish would require choosing fish species such as____?
A. Tilapia that eat algae and plants
B. Tuna that eat other fish
C. Catfish that eat fishmeal
D. Carp that eat fertilizer
E. Trout that can be easily caught

Answers

Answer:

A tilapia that eat algae and plants

A. A tilapia that eat algae and plants

Most scientists agree that saturated fats contribute to high levels of “bad” cholesterol, while monounsaturated fats and polyunsaturated fats lower this type of cholesterol. The table below shows data about fats in some common foods.

Food (14 g) Saturated fat (g) Monounsaturated fat (g) Polyunsaturated fat (g)
Canola oil 1.0 8.9 3.9
Margarine 1.6 5.4 3.4
Olive oil 1.9 9.9 1.4
Lard 5.0 5.8 1.4
Butter 7.9 3.7 0.5

Joyce and Linda are identical twins who are 50 years old and enjoy exercising daily. Joyce avoids eating any dairy or animal products and eats granola made with canola oil for breakfast. Linda prefers rich foods, and eats bacon, eggs, and buttered toast each morning. Which statement describes a logical inference that can be made from the provided information?

a)Butter has higher levels of saturated fats in it than canola oil.
b)Linda and Joyce both have high levels of “bad” cholesterol.
c)Butter contains a small amount of polyunsaturated fats.
d)Linda has a higher level of “bad” cholesterol than Joyce.

Answers

Answer: D: Linda has a higher level of "bad" Cholesterol than Joyce

Explanation: From the first sentence Saturated fat contributes to high level of bad cholesterol. Buttered food, bacon ( Lard) are significantly high in saturated fat which contributes to high level of bad cholesterol and that's what Linda is eating. Joyce on the other hand avoids animal products and feeds on granola from Canola oil which is low in saturated fat.

The logical conclusion base on this diet is Joyce has low level of bad cholesterol while Linda has high level of bad cholesterol

Answer: THE ANSWER IS D :)

Explanation:

How is a genetic switch different than a gene? How are they the same

Answers

Genes code for characteristics and processes, where a genetic switch is the process of genes being turned off and on during development, telling that cell to produce a specific set of proteins; for example, a if there was a stomach cell placed within your arm, that stomach cell would be switched off as the proteins that it produces are not needed in the arm; where a gene is the sequence that codes for the characteristics of that cell.

Which of the following do cells obtain from nutrients in food?
A. lithium
B. helium
C. energy
D. oxygen

Answers

the answer is energy


Design a plan that can be used by oil workers everywhere to save ecosystems

Answers

Answer:

Oil workers activities involved in the exploration of crude oil and natural gas creates pollution which affects the ecosystem negatively. The various pollutions cause the death of plant and animal life both on land and in water bodies.

The oil workers should be more careful in their activities to prevent oil spillage as much as possible and if there is any at all then there should be adequate measures in the cleaning it up efficiently through biological and harmless chemicals.

Earth's crust and uppermost mantle form the

Answers

Answer:

The lithosphere

Explanation:

The upper mantle is in between the lower mantle and the earths crust Crust. In other words, the outer most solid shell of the earth. The earth's crust and uppermost mantle form the lithosphere.

Hope this helped!

Answer:

lithosphere

Explanation:

3. (4pts) A constraint is a limitation or condition that must be satisfied by a design. For example, you may onl
be able to use certain materials, or you might want the device to operate at a certain speed.
What was a constraint (a limitation or a condition) in this version?

Answers

Answer:

As seen in the question above, "constraint" is a word that indicates a limitation or condition. In this case, we can say that the "restriction" is an imposition to a limit under a given situation, and it can also mean an imposition of the free execution of an activity, skill and even limitation and a conditioning factor to a certain freedom.

What helps mitochondria make proteins by itself? 1. Presence of membrane 2. Presence of ATP 3. Presence of Ribosomes 4. All of the above

Answers

Answer:

presence of ribosomes because they are the main sites of production of proteins

Answer:

3. Presence of ribosomes

Explanation:

Mitochondria has its own ribosomes which help in the synthesis of protiens

What acid precipitation and two examples of the negative effects of air pollution.

Answers

Any form of precipitation, including rain, snow, hail, fog, or dew, that is high in acid pollutants, especially sulfuric and nitric acid. Acid precipitation has a pH of less than 5.6 (the normal acidity of unpolluted atmospheric water) and is often less than pH 5.0.
Air pollution can kill trees and can cause chronic disease

What happens when muscles in the frogs body wall contract?

Answers

With the nares open, the frog contracts muscles in the floor of its mouth to drop the floor of the mouth down. This enlarges the buccal cavity. Since the area is larger, the pressure inside the mouth drops. Air rushes through the nares into the buccal cavity equalizing the pressure inside and outside the frog.

The law of April 6 1830 signaled a major shift in

Answers

Answer:

This isn't biology LOL. But "the implementation of the American policy of westward expansion."

Explanation:

the increasing rights of Tejano farmers to own land in Texas.
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