Read each question carefully. Then select the letter of the best answer 6. What is the study of the interaction of living things with one another and with its environment a. A system that helps animals survive in the environment. b. All of the biotic and abiotic factors in an area c. A place with a bunch of dead organisms d. A relationship among organisms. 7. Which of the following can best represent the ecosystem? b. 8. Man interferes with the balance of nature when he a. pollutes air and water c. disposes his garbage properly b. practices selective logging d. helps control overpopulation by practicing family planning 9. The ecosystem is primarily composed of six components that includes the sun (source of sunlight), producers (plants), abiotic substances (water, soil, air, etc.), primary consumers, secondary consumers and ? a. ecology b. ecosystem predation d. decomposers 10. Which of the following can help conserve our ecosystem? a. Construct buildings near the river banks. b. Improve the ecosystem by inviting tourists to visit your place. c. Protect the forests and bodies of water against harmful activities d. Encourage the political leaders to build farm to market roads to reach all beautiful places