Human activities

a create the greenhouse effect

b eliminate the greenhouse effect

c exacerbate the natural greenhouse effect

d diminish the greenhouse effect

some think that theories become laws, but theories and laws have separate and distinct roles in the scientific method. a law is a description of an observed phenomenon in the natural world that hold true every time it is tested. it doesn't explain why something is true; it just states that it is true.

we need answer choices

a electromagnetic waves

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).