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balandron [24]
4 years ago
7

Which of these BEST describes our current understanding about how species evolve over time?

Biology
2 answers:
pantera1 [17]4 years ago
6 0
The answer is <span>D)- Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.</span>
Vitek1552 [10]4 years ago
5 0
<span>Populations evolve as natural selection results in a change in the frequency of alleles within the population over time.

</span>
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The domain Archaea is comprised of ____________ organisms.
GaryK [48]

The domain Archaea is comprised of unicellular, prokaryotic organisms.

<h3>Archaea</h3>

Archaea is a group of microscopic organisms that are unicellular, prokaryotic, and live in extreme environmental conditions.

Archaea are found in environments such as hydrothermal vents, hot springs, etc. An example includes the blue-green algae.

More on archaea can be found here: brainly.com/question/1475001

#SPJ9

6 0
2 years ago
Identify a structure other than a cell wall or a vacuole that might be found in a plant cell but not in an animal cell. explain
enot [183]
One structure that can be found is most plant cells is chloroplast. A plant cell may have around 0 to 20 chloroplast, depending on their location in plant or their function.

Chloroplast is the structure that photosynthesis occurs. Photosynthesis is the method that plant make food for themselves. They turn sunlight into food such as starch.

Plants are autotrophs, which means they make food themselves, they don't need food from other sources like animals. Therefore, chloroplast is not found in animal cells because we are heterotrophs, we feed on other food.
4 0
3 years ago
Can somebody help me out
ozzi

Answer:

the answer is c

Explanation:

7 0
3 years ago
Enter the correct 4 digit code (no spaces)
-Dominant- [34]

Answer:

as a teacher i can help

Explanation:

q1 is d, a phenotype is how you look, so its 4. q2 is b, its one possiblity out of 4, so its 1. q3 is a, thats a pedigree chart, so its 7. q4 is c, if they both are expressed they are co dominate, so its 2.

7 0
3 years ago
How long does it take for a person's cells to all die after clinical death?
Blababa [14]
Clinical death is the medical term for cessation of blood circulation and breathing, the two necessary criteria to sustain human and many other organisms' lives.

It occurs when the heart stops beating in a regular rhythm, a condition called cardiac arrest.


Brain injuries start to accumulate almost immediately after Clinical Death.

Full recovery of the brain after more than 3 minutes of clinical death at normal body temperature is rare.

Usually brain damage or later brain death results after longer intervals of clinical death even if the heart is restarted and blood circulation is successfully restored.
Although loss of function is almost immediate, there is no specific duration of clinical death at which the non-functioning brain clearly dies.






The most vulnerable cells in the brain, CA1 neurons of the hippocampus, are fatally injured by as little as 10 minutes without oxygen.

However, the injured cells do not actually die until hours after resuscitation.

Brain failure after clinical death is now known to be due to a complex series of processes called Reperfusion Iinjury that occur after blood circulation has been restored, especially processes that interfere with blood circulation during the recovery period.

Hope this helps!!!
~Alkka♥


4 0
3 years ago
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