Is mowing grass a physical or chemical change? Explain how you know what kind of chnage occurred

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Match with o for organic and i for inorganic for each compound

Archaebacteria use for movement. celia flagella pili cell walls