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Choose the letter of the best answer. Write it on a separate sheet of paper. 1. Which of the following is an abiotic component of the environment? A. sprouting mongo seeds C. grass on mountain slopes B. group of whales D. flowing lava 2. What is the source of energy for all life forms on earth? A. plants C. sunlight B. animals D. water 3. Which refers to the study on how living things interact with the environment? A. ecosystem C. energy pyramid B. abiotic factors D. ecology 4. Which of the following is an example of biotic factor in a forest ecosystem? A. waterfall C. cliff B. tree D. rock 5. Which of the following is an example of consumer? A. frog C. water lily B. algae D. cattails 6. Plants are producers because they can make their own food. What is the other term for producers? A. heterotroph C. decomposer B. autotroph D. omnivore 7. Which of the following abiotic factors will lead to organisms' extinction? A. reforestation C. flood B. climatic change D. humidity
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