Which item has the greatest density? A. A soccer ball
B. A tennis ball
C. A ping pong ball
D. A bowling ball

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.

Most of the carbon on earth is stored in the form of

What are the three groups of atoms that make up amino acids called