1. scapulohumeral rhythm involves of the scapula and of the humerus. a. downward rotation, extension b. downward rotation, abduction c. upward rotation, abduction d. abduction, adduction

Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?

List two limitations of natural selection

Match the examples to the correct level of organization. 1. system level roses, snakes, puppies 2. organism level roots, stamens, leaves 3. tissue level bone, cartilage, blood 4. organ level heart, veins, arteries