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Question 5 - Scientific Methods 5. A scientist testing the affects of a chemical on apple yield sprays an orchard with the chemical. A second orchard does not receive the chemical. In the fall, the number of apples harvested from each forest is counted. Which of the following is the independent variable (IV) in the experiment? A. The chemical B. The number of apples C. The first orchard D. The second orchard Question 6 - Ecosystem 6. All the different species of an ecosystem are referred to as the: A. Biome B. Community C. Population D. Abiotic factors Question 7 - Ecosystem 7. Which of the following would be a biotic factor in an ecosystem: A. Soil B. Bacteria C. Rainfall D. Temperature Question 8 - Ecosystems 8. Describe the 4 types of symbiotic relationships. Remember to write full sentences. https://encrypted-tbn3.google.com/images?q=tbn:ANd9GcT50PtbPkBshZ88deb5h8TdxJNBcNvVY3gIlsrAJb103S6VNDq0Ig https://encryptedtbn0.google.com/images?q=tbn:ANd9GcTXtmpJk2G0B3LJuJD33wh8IlsCZtl19khkBNxZEZcICT3VS7g2 https://encrypted-tbn2.google.com/images?q=tbn:ANd9GcT-XQruM9SJbYuOPwA6Of3CcPcLztGf0wxnlLqPbAodFsmsC0rA Question 8 – Answer - Ecosystems Type of relationship Species harmed Commensalism Parasitism Mutualism Predation = 1 species Species benefits Species neutral