Chromosomes are found in pairs, one from the father and mother. a. nonsister b. haploid c. homologous d. chromatids

The chemical form of energy that is useable by the cell to do work

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Where is having brightly colored feathers that attract mates most clearly an adaptation for a bird? a. a forest with dense vegetation b. a sandy beach beside an ocean c. a snowy tundra with little vegetation d. a swamp with many hawks that eat birds