B.Choose the correct letter of the best answer: 6. What do you call the non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems? A. abiotic B. ecosystem C. living things D. all of the above 7. What do you call the movement of the surface of the water? A. movement B.salinity C. soap D. waves 8. It refers to the amount of salt in water. A. salinity B. sunlight. C. temperature D. wave 9. What do you call the hotness or coldness of water? A. moisture B. salinity D.wave C. temperature 10. What do you call the home of all living organisms working together? B. biotic C. ecosystem D. mutualism A. abiotic . Observe the pictures of biotic and abiotic factors and the feeding relation