what is the gravitational potential energy of a boulder that weight 600 kg and is on top of a mountain 1,200 meter up?

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.

Select the correct answer. a chestnut-colored horse mates with a white-colored horse to produce a brown and white spotted offspring. what is the type of inheritance pattern?

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird