Answer:
<em>The ability of a system or living organism to adjust its internal environment to maintain a state of dynamic constancy; such as the ability of warm-blooded animals to maintain a stable temperature.</em>
Explanation:
<u>HOPE</u><u> IT</u><u> HELPS</u>
D) allele frequencies of some traits change in the population
Alleles can be phenotype (how they appear) and natural selection is when an organism changes in a way that helps them survive.
It can be the way their beaks are formed that gives them a better chance of catching food among other stuff (Darwin's investigation)
Or how they change their color to adapt to the sudden change in tree coloration (Pepper moths)
Where's the cell. It says "the cell shown above..." I can't help you unless I know which cell is above.
Explanation:
imagine I teach my child at my home , it doesn't involve any commercial purpose . I don't need any money from my child , so that's free market economy.