AP BIOLOGY

Detailed explanation-1: -Pollutant = harmful material that can enter the biosphere through the land, air or water.

Detailed explanation-2: -Atmospheric Nitrogen and Sulfur Deposition and Impacts on Ecosystems. Atmospheric deposition of nitrogen and sulfur resulting from air pollution is a major stressor to natural ecosystems, often leading to acidification and eutrophication of both terrestrial and aquatic ecosystems.

Detailed explanation-3: -These harmful materials are called pollutants. Pollutants can be natural, such as volcanic ash. They can also be created by human activity, such as trash or runoff produced by factories. Pollutants damage the quality of air, water, and land.

Detailed explanation-4: -Acts like deforestation and burning of fossil fuels have negative environmental impacts which directly affect the biosphere. Carbon dioxide and emissions of various pollutants adversely effect all kinds of life forms. One specific concern is the greenhouse gas emissions that are attributed to global warming.