Which of the following would be a result of eutrophication of a lake? undergrowth of water plants
hypoxia, or low levels of oxygen
decreased decomposition
inactivity of fertilizers

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

20 the compound al(nh3)2 has atoms of nitrogen.

On his trip to the galapagos islands, darwin determined that animals on the islands