Here are the answers to your questions based on ecological concepts:
Question 4: How much energy from producers do primary consumers store?
Response: 10%
Question 5: According to this video, what happens if a primary consumer is removed from a food chain?
Response: Other consumers may not have enough to eat
Question 6: What is the main difference between a food chain and a food web?
Response: A food web is more complex and shows multiple interactions
Question 7: How does the amount of energy change as you move up the energy pyramid?
Response: It decreases
If you have any further questions or need clarification, feel free to ask!