Angiosperm belong to a class called​

In what for do plants utilize nitrogen? why do they need nitrogen?

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

Which ocean is on the eastern coast of north and south america? arctic ocean indian ocean pacific ocean atlantic ocean