3.4: Energy in Ecosystems

Question 1

What are the 3 ways in which energy can be lost along a food chain?

Answer 1

• Heat
• Undigested materials
• Movement

Question 2

What is a pyramid of numbers?

Answer 2

Represent the number of each organism at each level in a food chain - can be irregularly shaped

Question 3

What is a pyramid of energy?

Answer 3

Represent the energy at each level in a food chain - always a pyramid shape