Answer:
False
Explanation:
It might mean:
1. There was a population bottleneck such as a mass death event
2. Antigenic drift - changes in prevalence of some gene types due to random chance
Climax community- most stable community that takes hundreds of years to develop. The types of organisms change due to __?__.
competition
random chance
being the luckiest
Answer:
its competition
Explanation:
A student is studying the structural details of an animal cell, a plant cell, and a prokaryotic cell. He notes that a prokaryotic cell and a plant cell possess a protective cell wall. He also observes that both eukaryotic cells have membrane-bound organelles and are larger in size than the prokaryotic cell. Which other conclusion is also supported by the study?
Answer:
What are the answer choices?
Explanation:
If there are none, say that prokaryotic cells have a cell wall, large vacole and chloroplast.
What is the structure of DNA? 20 points.
Answer:
Basic structure of DNA
DNA is made up of molecules called nucleotides. Each nucleotide contains a phosphate group, a sugar group and a nitrogen base. The four types of nitrogen bases are adenine (A), thymine (T), guanine (G) and cytosine (C). The order of these bases is what determines DNA's instructions, or genetic code.
DNA structure and function
DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes. These chromosomes are made up of thousands of shorter segments of DNA, called genes.
Explanation:
DNA is made up of molecules called nucleotides. Nucleotides are attached together to form two long strands that spiral to create a structure called a double helix. If you think of the double helix structure as a ladder, the phosphate and sugar molecules would be the sides, while the bases would be the rungs.
Ventricles are chambers of heart which are:
Answer:
they are chambers located below the two atria.
the right ventricle receives deoxygenated blood whereas the left receives oxygenated blood which opens up into the aorta
Which of the following is not a response to stress
Answer:
You might want to add the question options
Explanation:
Where does the fetus normally develop?
Answer:
in the womb !!
Explanation:
hAve a good night
Answer:
Inside the uterus, the blastocyst implants in the wall of the uterus, where it develops into an embryo attached to a placenta and surrounded by fluid-filled membranes.
check out the image
Answer:
the image? I dont see one?????
Explanation:
How many categories are there on the Modified Mercalli Scale?
Answer:
i hope this helps!!?
Explanation:
Giuseppe Mercalli (1850-1914) originally developed the scale, with ten levels. In 1902, Adolfo Cancani extended the scale to include twelve levels. August Heinrich Sieberg completely rewrote the scale. For this reason, the scale is sometimes named Mercalli-Cancani-Sieberg scale, or MCS scale.
Answer:
awsten knight
Explanation:
Choose all of the areas in which the United States invoked the Roosevelt Corollary to the Monroe Doctrine.
The correct answer to this open question is the following.
Unfortunately, you did not attach the options to answer this question.
What we can do to help you is commenting on the following.
Throughout history, the United States invoked the Roosevelt Corollary to the Monroe Doctrine to accomplish some imperialistic and interventionists goals in different Central American and South American countries.
We can set some examples here. For instance, that was the case of the US intervention in the Island of Cuba, in Nicaragua, Dominican Republic, Hati, and the US presence for so many years in the Panama Canal.
Let's have in mind that the Roosevelt Corollary to the Monroe Doctrine was originally called for intervening in Latin American countries that could not pay their debt to European creditors.
The message the US wanted to convey to European superpowers that had interests in this region was that from now on, it was going to be the US business to intervene in the Americas. If Europe tried to intervene, it was going to be understood as direct aggression to the United States.
What are three ways a plant's organ systems work together?
A The shoot system delivers food to the root system.
B. The root system delivers materials from the soil to the shoot
system
The ground tissue of the root system protects the vascular tissue
in roots
D. The ground tissue of the root system stores food for later use by
leaves
Answer: A, B, D
Explanation: credit to the comments on the other. I also did the test
The three ways through which a plant's organ systems work together are as follows:
The shoot system delivers food to the root system.The root system delivers materials from the soil to the shoot system. The ground tissue of the root system stores food for later use by leaves.Thus, the correct options are A, B, and D.
How do plants deliver water and nutrients to other parts?Plants deliver water and other nutrients to other parts with the help of vascular tissues like xylem and phloem.
Xylem transports water, nutrients, and other minerals from the soil to all parts.
Phloem mediates the migration of foods from the leaves to the rest of the plants.
The shoot system delivers food to the root system via the vascular tissue phloem. The root system delivers materials from the soil to the shoot system via the vascular tissue Xylem.
The ground tissue of the vascular plant is responsible for storing the carbohydrates constructed by the plants and utilized by the leaves when required.
Therefore, the correct options are A, B, and D.
To learn more about Vascular bundles, refer to the link:
https://brainly.in/question/652706
#SPJ5
Earth travels in an ———— , oval around the sun.
A. arch
B.rectangle
C.Ellipse
D.circle
Answer:
D.circle
Explanation:
Answer:
Arch
Explanation:
Lung cells obtain sodium ions, and chlorine ions from the adjacent blood vessels by which process?
Answer:
Not sure about the sodium but you might be referring to the Chloride Shift in the lungs.
Explanation:
Why are communication signals important in everyday life?
helpppppp plsssssssss
Answer:
the net force would be 45n
Explanation:
20n+25n=45
Where is the liver and pancreas ?
Answer:The pancreas is located behind the stomach in the upper left abdomen. It is surrounded by other organs including the small intestine, liver, and spleen.
Explanation:
Answer:
The pancreas is located behind the stomach in the upper left abdomen. It is surrounded by other organs including the small intestine, liver, and spleen.
PLSSS HELP, the question is what does this represent.
Answer:
metaphase
Explanation:
Is poaching considered a limiting factor? (please explain why or why not)
Answer: No, a limiting factor is something that you can’t survive without.
Explanation: Poaching is not a limiting factor.
Answer:
It is
Explanation:
because if someone is killing animals then that animal that animal that animal eats its thriving. Because of the change in popluation
WILL MARK BRAINLIEST!!!
Recipient Blood Type A can Receive from:
Recipient Blood Type B can Receive from:
Recipient Blood Type AB can Receive from:
Recipient Blood Type O can Receive from:
3. Cardiac muscle cells make up which type of muscles?
(5 Points)
O A. Voluntary
B. Smooth Muscle Cells
C. Skeletal Muscle Cells
O D. Involuntary
Explanation:
voluntary muscles are ones that work without you having to think about it..example heart, lungs. part of the APT system...Autonomic ...
ANSWER FOR 44 POINTS!!!! Also please answer it like don’t just put random stuff I actually need help here <3
1. A unit used to measure energy is the kcal.
a. What is the source of all
energy in the pyramid?
b. How much energy does this source provide to a square meter of the Earth per year? (Be sure your
answer includes units.)
2. The arrows represent the energy available to the next level of the pyramid.
a. What percentage of the source energy form question 1 is absorbed by the oak leaves? Divide oak levar got by the total sunlight hitting the earth’s surface.
b. By what process do the oak leaves harness this energy?
3. Describe how the consumers in one level of the pyramid obtain energy from the organisms at the previous level of the pyramid.
a. How much energy per year do caterpillars obtain from eating the leaves in a square meter of the oak tree?
b. What percentages the energy that was originally by the oak leaves is passed in to the caterpillars? Divide ye hat the caterpillars got by wag at leaves got.
c. What percentage of the energy absorbed by the oak leaves is not passed on to the caterpillars?
4. Calculate the percentage of the nervy that is transferred from one level of the pyramid to another for all of the levels?
a. Oak leaves to caterpillars (see question 3b)
b. Caterpillars to blue jays.
c. Blue jays to hawk.
5. Calculate the average percentage of energy that is transferred from one level to another using you answers in question 5. Note that this average percentage transfer is similar for many different types of energy pyramid in nature.
6. Explain why an energy pyramid in any ecosystem typically is limited to four or five levels only.
Answer:
If you use this link it gives you most of the answers, if you want I can try to find another link to help with the rest of the questions if you want me to
Explanation:
https://quizlet.com/_30xwac?x=1jqt&i=1ilexf
Answer:
What is the source of all energy in the pyramid in Model 1
Sunlight hitting the earth's surface
How much energy does this source provide to a square meter of the Earth per year? (be sure your answer includes units)
3,190,000 kcals
Label the pyramid levels in Model 1 with the following: primary producers, primary consumers, secondary consumers, and tertiary consumers
Oak tree leaves are the primary producers
Caterpillars are the primary consumers
Blue Jays are the secondary consumers
Hawks are the tertiary consumers
What percentage of the source energy from question 1a is absorbed by the oak leaves in Model 1?
8 %
By what process do the oak leaves harness this energy?
photosynthesis
Describe how the consumers in one level of the pyramid obtain energy from the organisms at the previous level of the pyramid
By consuming them
How much energy per year do the caterpillars in Model 1 obtain from eating the leaves in a square meter of the oak tree?
4,000 kcal
What percentage of the energy that was originally absorbed by the oak tree leaves is passed on to the caterpillars
13.5%
What percentage of the energy absorbed by the oak leaves is not passed on to the caterpillars
84.3%
With your group, list at least three possible uses and/or products of the energy absorbed by the oak leaves that did not contribute to the production of biomass.
Photosynthesis, heat, leaves changing colors
What conclusions can you make about the effectiveness of rewilding projects.
Answer:
Benefits of rewilding
Draws down carbon from the atmosphere. ...
Helps wildlife adapt to climate change. ...
Reverses biodiversity loss. ...
Supports diversified economic opportunities. ...
Improves our health and wellbeing.
*From another source, not my own words*
I wrote this sentence because I did not want to plagiarize as other people do
Explanation: :)
Which term describes the energy of molecules in motion?
thermal energy
atomic energy
material energy
molecular energy
Answer:
I'm thinking molecular energy.
Explanation:
just because you know, molecules, molecular... that's all I got I'm afraid :(
Property of Matter
The mass of a book on Earth is 140 grams.
1- Calculate the mass of the book on the moon.
(On moon surface gravity (g) is 1.6 N/kg)
Answer:
The mass would be 140 grams.
Because mass wouldn't change in different places but weight would change.
explain why the structure of DNA is described as a double helix
Answer:
The double helix is the description of the structure of a DNA molecule. A DNA molecule consists of two strands that wind around each other like a spiral staircase. Each chain has a backbone in which a sugar (deoxyribose) and a phosphate group alternate.
Because DNA is replicated by using the original strands as a template, every DNA molecule has one _____ strand and one _______ strand.
A. Adenine, Thymine
B. Guanine, Cytosine
C. New, Original
D. Nucleotide, Carbohydrate
IM GIVING 30 POINTS TO WHOEVER ANSWERS THESE
1- how does modern technology provide evidence that all organisms have a common ancestor?
2- what new discoveries about evolution have modern technology made possible?
Answer: 1. Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
2. The changes in our behavioral patterns and adaptations that are caused by these technological advances could prove to be the primary driving forces behind the next stage of evolution for our species. These members of the species are more likely to reproduce and pass their genes on to their children.
Explanation:
What is the purpose of the carbs on the lipid bilayer?
A. to make the proteins do their job
B. it serves as the ID of the cell so the immune system does not attack it, and helps it adhere to other cells.
C. to make the model a fluid mosaic
D. it serves as the lipid bilayer control center, helping things realize their potential
Answer:
B
Explanation:
What do waves transfer?
O matter
O energy
O water
particles
Answer:
Energy
Explanation:
In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels.
Answer:
energy
Explanation:
Wave' is a common term for a number of different ways in which energy is transferred: In electromagnetic waves, energy is transferred through vibrations of electric and magnetic fields. In sound waves, energy is transferred through vibration of air particles or particles of a solid through which the sound travels
How protein are important in carrying out essential functions
don’t mind my dirty computer haha
Answer:
All of the above
Explanation:
All of this literally explains what a night sky is what question is that?
