1. What is one characteristic that all living things and only living things have in common? 2.How did both the Redi and Pasteur experiments prove there was no such thing as a spontaneous generation? 3.Why do living things need water, food, and space to live? 4.The paws of the arctic fox are covered in thick fur. How does this help the fox maintain homeostasis?

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Tides that occur during the new and full moons

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