Quick Chapter Review! 1. A pest is A. a weed B. an organism that destroys crops C. any plant that grows where humans do not want it to grow D. all of the above 2. The concentration of a chemical increases as you move up the food chain.This is called A. resistance B. insecticide C. biological destruction D. biological magnification 3. The buildup of nutrients in a lake leads to excessive plant growth a lack of oxygen, and the eventual death of the lake. This process is called A. nitrification B. eutrophication C. non-biodegradable D. biological magnification 4. Which of the following is caused by heat trapped in the atmosphere? A. eutrophication B. greénhouse effect C. biological magnification D. the buildup of nitrogen in the atmosphere 5. From which of the following sources does Alberta get most of its energy? A. fuel cells B. solar energy C. wind energy D. fossil fuels 6. The burning of fossil fuels is harmful to the environment because A. heat is released into the atmosphere causing global warming B. water vapour is released into the atmosphere, causing torrential rains C. hydrocarbons are released into the air,blocking sunlight and cooling Earth D. carbon dioxide is released into the atmosphere, adding to the gases that cause global warming