1) A community of organisms interacting with their environment a) species b) habitat c) ecosystem d) biotic 2) When an organism requires another to survive a) biotic b) ecosystem c) co-dependence d) interdependence e) dependency disorder f) symbiosis 3) The arrows in a food chain represent... a) The circle of life b) What eats what c) Transfer of energy d) Predator 4) What is the producer in this food chain: leaf -> catterpillar -> bird -> cat a) cat b) bird c) catterpillar d) leaf 5) Which best describes the role of the bird in this food chain: leaf -> catterpillar -> bird -> cat a) producer b) primary consumer c) secondary consumer d) omnivore 6) What would happen if a disease killed most of the birds in this food chain: leaf -> catterpillar -> bird -> cat a) Population of cats decrease b) Population of cats increase c) Population of caterpillars decrease 7) How is carbon dioxide made into glucose? a) Respiration b) Photosynthesis c) Ingestion d) Decay 8) Which processes return carbon dioxide to the atmosphere? a) Respiration of animals b) Photosynthesis c) Respiration of plants d) Underground storage e) Respiration of decomposers f) Combustion 9) Water enters plants... a) through roots, by osmosis b) through stomata, by diffusion c) through stomata, by transpiration d) through roots, by active transport 10) Carbon dioxide enters plants... a) through stomata, by diffusion b) through their roots, by osmosis c) through stomata, by transpiration d) through roots, by active transport 11) Which is not a greenhouse gas? a) carbon dioxide b) water vapor c) methane d) oxygen e) ozone f) nitrous oxides

B7 ecosystems

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