Explain how plants allow all organisms on earth to survive? (3-4 reasons required)

Plants on Earth provide food, some even provide shelter to some animals, and plants such as trees provide oxygen to the environment.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

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: