You ve covered a lot of information so far in this class, so to help you study try answering these Check your knowledge Questions. If you try to answer these questions from your text, readings, and notes, I m sure you ll enhance your knowledge. Plants remove carbon dioxide from the atmosphere during photosynthesis. Denitrification converts nitrogen gas in the atmosphere to ammonia. Nitrogen cycles at a faster rate in the biosphere than does phosphorus.
Disturbance increases the rate of nutrient loss from ecosystems.
Our first view of the earth from the moon came in 1968. The most prevalent metabolic gas in the atmosphere is oxygen. Atmospheric and oceanic circulation patterns assure that pollutants produced in one part of the globe will remain in the same area. Although nitrogen-fixation resulting from human activity is high, it represents only a fraction of the amount fixed by natural processes. Fortunately, the country with the largest single tract of tropical rain forest has the lowest rates of deforestation.