In this food chain case, there are six trophic levels. Which of the following sequences lists the trophic levels from "first" or lowest to “sixth" or highest? a. copepods, herring, phytoplankton, swordfish, mackerel, human b. herring, human, copepods, mackerel, phytoplankton, swordfish c. phytoplankton, copepods, herring, mackerel, swordfish, human

Explains, with several scientifically detailed information, how global warming affects the beélugas population. (With an explanation of more than 700 words)

Study the food web above. How does the food web illustrate the importance of biodiversity for human needs. Choose the best answer. A. The hawk is a top consumer so it is needed for human sightseeing B. All the organisms in the food web could be replaced with a man made organism C. Humans Consume Corn and all the organisms keep a delicate balance to maintain proper corn production D. Grasshoppers and mice need to be eliminated from the food web to increase food production for humans

5. Which organisms do leopard seals eat? 6. Which organisms eat krill? 7. What producer(s) can be found in the food web? 8. List one important type of organism missing from this food web: 9. If there was a large oil spill which blocked most of the sunlight, decreasing the amount of algae available, how would each of the following populations be affected? 10. Use the food web to identify organisms using the following table so that the killer whale is the quaternary (fourth) consumer. 1. Primary consumer 2. Secondary consumer 3. Tertiary consumer 4. Quaternary consumer Created by counting organisms at each level First level carnivores Herbivores Marine Plankton Population How it Will Be Affected: Cod Leopard seal Killer whale Created by weighing organisms at each level First level carnivores Marine Plankton © 2011 Vanema mn Herbivores Killer whale Created by measuring calories at each level First level carnivores Marine Plankton Herbivores A B с View the three pyramids above. Identify…