When the semilunar valves close, the av valves then

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 .

Match each description to the level of organization

What is the name of the idea that energy cannot be created nor destroyed