Only part of the energy in one trophic level gets passed to the next level. in an energy pyramid, about is passed from level to level. a. 10% b. 90% c. 30% d. 50%

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 .

Explain how scientists use geologic time to determine the age of landforms.

Which nucleotide component contains nitrogen