PLSS HELP
What is NOT an adaptation that pioneer species need? *
A. ability to do photosynthesis
B. live without soil
C. the ability to grow tall
D. tiny roots to break down rock
Explanation:
Primary succession, type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat. Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community. This community becomes more complex as new species arrive. Primary succession is distinguished from secondary succession, which is the recovery of an existing biological community after a disturbance sets back the community’s ecological structure to an earlier stage.
Give two factors that keep most populations in creation from experiencing a population explosion
Explanation:
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During one year, seven coyotes in a population die. Eight immigrate into the population, but none emigrate. If the overall population growth is 13 coyotes, what was the birth rate of coyotes during the year? Use this formula: population growth = (birth rate + immigration) – (death rate + emigration) 7 11 12 15
Answer:
Death rate= 7 coyotes
Immigration= 8
Emigration= 0
Population growth= 13
Let’s suppose that the birth rate for the given population is x.
Population growth = (birth rate+immigration) - (death rate+emigration)
13=(x+8)-(7+0)
13=x+1
Move the variable to the left side and change its sign.
-x+13=1
Move the constant to the right side and change its sign
-x=1-13
-x=-12
x=12
Answer: x=12
Explanation:
edge2021
Answer:
Death rate= 7 coyotes
Immigration= 8
Emigration= 0
Population growth= 13
Let’s suppose that the birth rate for the given population is x.
Population growth = (birth rate+immigration) - (death rate+emigration)
13=(x+8)-(7+0)
13=x+1
Move the variable to the left side and change its sign.
-x+13=1
Move the constant to the right side and change its sign
-x=1-13
-x=-12
x=12
Answer: x=12
Explanation:
edge 2021
What did Chargaff discover while studying bases in the DNA of organisms?
The bases in the DNA of each organism were unique.
The ratios of thymine and adenine were similar, as were the ratios of guanine and cytosine.
The overall percentages of bases were different from one organism to the next.
There were equal amounts of all four bases in every organism, or 25 percent of each base.
Answer:
The overall percentages of bases were different from one organism to the next.
Answer:
The correct answer is c!:)
Explanation:
Hope this helps!:)
List the changes that occur in the zygote after fertilization that contribute to human development
Answer:
Hello! Sorry i am late! Here is my best answer below.
Fertilization happens when a sperm cell successfully meets an egg cell in the fallopian tube. Once fertilization takes place, this newly fertilized cell is called a zygote. From here, the zygote will move down the fallopian tube and into the uterus. The zygote then burrows into the uterus lining.
Explanation:
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What are some changes that farmers could have made to their agricultural practices to avoid the Dust Bowl?
Answer:
Other helpful techniques include planting more drought-resistant strains of corn and wheat; leaving crop residue on the fields to cover the soil; and planting trees to break the wind.
Which of the following is NOT an example of evidence that supports the theory of evolution?
A. common genetic ancestors among diverse species
B. fossil evidence suggesting ancient genetic ancestors
C. unnecessary or nonfunctional organs in modern species
D. fossils of the same species found diverse geographic locations
The statement that is not an example of evidence that supports the theory of evolution is fossils of the same species found in diverse geographic locations.
What do you mean by Evolution?Evolution may be defined as a gradual and continuous process that runs over many generations, during which species of animals, plants, or insects slowly change some of their physical characteristics.
Common genetic ancestors may be diverse into the number of other species due to the theory of evolution. Unnecessary or non-functional organs may be eliminated or shortened due to evolution.
Therefore, the statement that is not an example of evidence that supports the theory of evolution is fossils of the same species found in diverse geographic locations.
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Frost forming on grass in the morning
PHYSICAL OR CHEMICAL CHANGE
Answer:
Physical
Explanation:
A physical change can be undone. A chemical change cannot. The frost on the grass will melt, therefore it can be undone.
Answer:
The answer should be physical change.
Explanation:
If not then im very sorry but I did learn this so I am pretty sure it is physical change.
List these taxonomic levels in order from BROADEST to MOST SPECIFIC - Species, Family, Class, Genus *
Answer:
Class, Family, Genus, Species
Explanation:
We can remember this with the phrase Dashing King Phillip Came Over For Great Soup. The first letter of each word is the first letter of a level of taxonomic classification. Hope it helps :)
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Amino acids are used to build
Answer:
Hello!
Explanation:
[tex]⭐ \red{\textbf{amino \: acids \: are \: used \: to \: build}}[/tex]
Amino acids are organic compounds that combine to form proteins.Amino acids are organic compounds that combine to form proteins. The human body uses amino acids to produce proteins to help the body break down food.
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atte:
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Answer:
Proteins.
Explanation:
"For a brick, He flew pretty good" - Sargent Avery Johnson
Which gas is most necessary for plants to do photosynthesis?
A. carbon dioxide
B. nitrogen
C. oxygen
QUESTION :::::
Which gas is most necessary for plants to do photosynthesis?
A. carbon dioxide
B. nitrogen
C. oxygen
ANSWER ::::
carbon dioxide
To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. for photosynthesis. Carbon dioxide enters through tiny holes in a plant's leaves, flowers, branches, stems, and roots. Plants also require water to make their food.
Explanation:
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After eating a sugary snack, a person's blood sugar
level may rise for a short period of time. Which
statement describes the body's way of restoring
homeostasis?
A. The brain will stimulate the body to sweat
in order to increase blood sugar levels.
O B. The brain will stimulate the cells to produce
more sugar, increasing blood sugar levels.
C. The brain will stimulate the cells to
maintain the elevated blood sugar levels.
O D. The brain will stimulate the release of a
chemical that will lower blood sugar levels.
20 point quick, brainly too
Answer:
b
Explanation:
nervous and circulatory
Answer:
lol
Explanation:
Answer each with a T for true of a F for false
At which level of organization would a scientist need to look to see a single structure made from similar tissues?
Organ.
Cell.
Organ system.
Molecule.
Answer:
The cell.
Explanation:
A structure consisting of comparable tissues constitutes an organ at the level of organization. So, the correct option is A.
What is Level of organization?The term "levels of organization" describes the various biological complexity levels or hierarchies at which living things can be researched and understood. These levels are organized hierarchically, with each level one on top of the one before it, and they include:
Organelles - Organelles are specialized structures within cells that perform specific functions.
Cells - Cells are the basic unit of life, and they are made up of organelles and macromolecules.
Tissue - Tissues are groups of similar cells that work together to perform a specific function.
Organs are collections of many tissues that cooperate to perform a certain function.
Organ systems - Organ systems are collections of organs that cooperate to accomplish a specific function.
So, the correct option is A.
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What are the general climate regions on earth?
The Earth has three main climate zones: tropical, temperate, and polar.
Answer: warm, hot, cold, chilly
Explanation:
Identical rock types, identical fossils, and very similar mountain ranges are found on different continents that are
separated by a wide ocean. Which of these best explains these observations?
A Organisms traveled between these continents on land bridges.
B The same forces erode mountains in different locations.
These continents were joined together at one time in the past.
Some rock types are very common and are found everywhere.
Answer:
These continents were joined together at one time in the past
Explanation:
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Answer:
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The DNA sequence CAT would be transcribed into which mRNA codon?
Answer:
GUA
Explanation:
Hello There!
These are the base pairs for transcription
IMPORTANT
when transcribing; Adenine transcribes to Uracil not Thymine
so it would be
Adenine to Uracil
Thymine to Adenine
Cytosine to Guanine
Guanine to cytosine
so we want to find the mRNA codon of the dna sequence CAT
Cytosine to Guanine (G)
Adenine to Uracil (U)
Thymine to Adenine (A)
your answer is GUA
Which option describes a mass extinction?
А.
a large meteorite hits the Earth; many species rapidly disappear from the fossil record
B. the amount of sunlight on Earth Increases; organisms of a single species increase in number
C. glaciers cover the Earth; many species rapidly increase in number and take over
D
a small volcano explodes; organisms of a single species disappear
Do you think new helpful species of bacteria will evolve with different functions? What would they do? What traits could they have to help them do these things?
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Air moves through this passage to the lungs.In what body system does it play a role?
A.digestive
B.skeletal
C.endocrine
D.eespiratory
what does it mean to be purebread ?
Answer:
If you meant purebred, it means that the species had not been bred with any other species than it`s own.
Ex: a purebred dog bred with another purebred dog produced a purebred offspring
a purebred dog bred with either another species of dog, or a crossbred dog will produce a crossbred offspring
Explanation:
How can fossils be used to determine the relative ages of rock layers?
Answer:
they use radiometric dating methods (find out what day it was formed)
Explanation:
based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.
how it reacts to certain chemicals can determine how old it is
During a field trip, an instructor touched a moth resting on a tree trunk. The moth raised its forewings to reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory receptors had fired and triggered a neuronal reflex culminating in the contraction of certain muscles. A second student responded that the behavior might frighten predators. Which statement best describes these explanations?
Answer:
The first explanation refers to proximate causation, whereas the second refers to ultimate causation.
Explanation:
The first example refers to proximate causation, whereas the second example to ultimate causation.
What is ultimate causation?The ability of one variable to impact another is known as causality, also known as causality. The first variable might create the second or might change the incidence of the second variable.
Correlation, which shows how much two variables tend to rise or fall together, and causation are frequently misconstrued. Correlation does not, however, automatically imply causality. The variations in both variables could be caused by a third component, for instance.
A statistically significant association has been shown between yellow cars and a reduced accident frequency. Just because there are fewer accidents involving yellow cars does not mean that they are any safer. A third element, such as the person's personality type.
Therefore, The first example refers to proximate causation, whereas the second example to ultimate causation.
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what happened in the step immediately before the phase pictured here to cause this problem
Answer:
come again..not got the question
Explain how organisms in both of the ecosystems are dependent on their environmental interactions with other living things and with nonliving factors.
Answer:
Explanation:Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors. ... Mutually beneficial interactions, in contrast, may become so interdependent that each organism requires the other for survival.
The organism that considered for an ecosystem that should be dependent on the environmental interactions should be explained below,
Environmental interactions:The organism and the organism population should be based on the environmental interactions along with the other living things also even with the non-living things of factors.
On the other hand, Mutually beneficial interactions should be considered as the independent where each and every organism should needed other for the survival purpose.
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A one-hectare forest community is sampled in early August. The sample yields 12 small trees, 4 types of vines, as well as 17 native shrubs that represent 10 species. What can be estimated from the sample for the shrubs in the forest community?
A. the forest’s productivity
B. the species richness
C. the degree of forest disturbance
D. the stability of the ecosystem
E. the uniformity of species distribution in the ecosystem
Answer:
The correct answer is - B. the species richness
Explanation:
Species richness determines the numbers of different species are present in an ecological community. It is a numerical value or count of different species present in a particular community.
The given information or data can only be used to estimate the species richness in the particular forest community as there is data available about the number of species presnt in this community.
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Answer:
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1. The sister chromatids are moving apart.
2. The nucleus and other organelles are no longer visible.
3. A new nuclear membrane is formed around the chromosomes.
4. The centrioles have reached the opposite poles of the cell.
5. The threadlike genetic material is formed and found in the nucleus.
6. The chromosomes are located at the equator of the cell.
7. The mitotic spindle disappears.
8. The centromeres of chromosomes split.
9. The mitotic spindle is formed.
10
11. The cell elongates.
12. Centrioles start to move toward the opposite poles of the cell.
13. Cytoplasmic contents start to duplicate.
14. The reverse of prophase.
15. The mitotic spindles converge and connect to the kinetochore of
chromosomes.