Some wild animals have unique features, such as stingers, claws, or the ability to change colors. These characteristics are examples of – 1. Genotypes
2. Adaptations
3. Responses
4. Stimuli

List two limitations of natural selection

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

Aplant may open end close its stomata to prevent excess water loss and maintain