Overpopulation impacts the environment primarily by

limiting land available for crops.
destroying natural resources.
causing the removal of trees.
interfering with normal plant growth.

answer: c. two haploid cells

explanation:

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.