AP BIOLOGY

Detailed explanation-1: -Nitrogen-fixing bacteria are prokaryotic microorganisms that are capable of transforming nitrogen gas from the atmosphere into “fixed nitrogen” compounds, such as ammonia, that are usable by plants.

Detailed explanation-2: -In the carbon cycle, decomposers break down dead material from plants and other organisms and release carbon dioxide into the atmosphere, where it’s available to plants for photosynthesis.

Detailed explanation-3: -Grasses are no longer able to compete as well in the forested environment. Which is most likely the limiting factor that inhibits the growth of the grasses in the forest? Nutrient-laden waters from heavy rains flow into the Gulf of Mexico.

Detailed explanation-4: -Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. These primary producers form the base of an ecosystem and fuel the next trophic levels.