Which statement is true of homo sapiens?
a. the evolved after the cro-magnons.
b. the have been earth's only hominine for the last 24,000 years.
c. they became extinct about 1 million years ago.
d. they coexisted with homo habilis for several thousand years.

Why do carbohydrate molecules function so well as fuel for the body?

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

Error analysis: what might be the reason that some of your percentages didn't exactly match your predicted results? gametes aren't responsible for inheritance. mice don't have large litters, so the sample size was not large enough. the wrong type of mice were used.