Choose all the answers that apply
The troposphere:
1. is the coldest layer
2. has very stable air
3. begins at the earth surface
4. contains the earth's weather
5. is the hottest air

not too sure but maybe in the hot springs.

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:

your answer would be a, maximum exploitation of resources.