What is the purpose of a dichotomous key? (Select all that apply.)
to find a common ancestor
to identify organisms
U to show the evolution of organisms
to show evolutionary relationships between organisms

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?

If an organ has six haploid chromosomes,how many chromosomes are present. 6 12