The water cycle is driven by energy from the sun which process and the water cycle is caused directly by the suns energy ?
a. evaporation
b. condensation
c. precipitation
d. infiltration

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

What function does the limb sever in each animal? how are the limb bones of the four animals similar? based on these similarities what can be inferred about the evolution of the four animals.

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes