Which of these groups is the smallest level of classification? A. Class B. Order C. Phylum D. Family​

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 will happen if two of the base pairs of the stand of the dna are switched

When a population split into two subgroups what is most likely to cause the subgroups to develop different traits?