Arainforest is an example of a
biome
community
habitat
population

A rainforest is an example of a community. A community refers to the interaction of various species within a common geographic location. Communities are also known as biological communities, where species interact and co-exist with another to thrive and survive their given environment. 

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: