Describe the krebs cycle. (You do not need to name the intermediate molecules, but can merely describe them by the number of carbon atoms.) Be sure to include the major steps and each reactant and product. Provide a summary of the reactants and products for one complete loop through the cycle.

Match the type of adaptation to the correct example, structural adaptation functional adaptation behavioral adaptation example type of adaptation elephants live in herds to protect their young leaves of a rain forest plant species have a pointed tip that enables rainwater to drain off easily. camels have nostrils that they can close snakes produce venom to kill prey and defend themselves. earthworms coil when touched, as part of a defense mechanism. human skin darkens with increased exposure to sunlight.

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.

How many years would it take the atlantic ocean to grow 500 centimeters? show your work.