3. Organisms that are NOT autotrophs A. can survive without energy
B. get energy from sunlight
C. make their own food
D. must feed on different organisms to get energy

Environmental impacts on evolution : mastery test

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

When a person is exercising the body needs to deliver increased amounts of oxygen to the muscles which component of blood ensures that the muscles will receive it