At the cellular level, membranes; for the whole organism, the skin is what

and after water is usually warmed by the sun the water temperature raises and then evaporates .

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

i think the answer is c hope this

answer///(c) the maximum number of organisms an environment can support for a long time; i believe this is correct, plz check luck;