Enzymes only work with specific substrates because each substrate?

What are two reasons for why a species might disappear from the fossil record?

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 .

Select the word from the list that best fits the definition a system made of 25 satellites