The moon's orbit around the earth is elliptical. this means that: a) the moon is always the same distance from the earth b) the moon moves at the same speed during its orbit around earth. c) the moon is tiny is comparison with the earth. d) the moon is sometimes closer to or farther from the earth.

Identify the terms using the following picture. principle of dominance item 1 can be described as the . item 2 can be described as the . the "p" represents from one parent.

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

What do we call an individual that has inherited two identical alleles for the same trait? a.homozygous b.heterozygous c.monozzygous