Describe the inheritance pattern of sickle cell anemia. Explain how the co-dominant inheritance pattern is important in maintaining this disease within the population.

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

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

How does the carbon cycle involve an exchange of carbon