Energy in ecosystems Flashcards
Life on earth
1
Q
Describe what happens to energy from one level to the next in a food chain
A
As energy transfers from one level of the food chain to the next, only 10% of the energy is passed on through growth.
90% of the energy is lost as:
heat
movement
undigested materials
2
Q
Describe a pyramid of numbers and a pyramid of energy
A
A pyramid of numbers is a diagram that represents the number of organisms at each stage of the food chain.
A pyramid of energy is a diagram that represents the amount of energy present at each stage of the food chain.
3
Q
Compare a pyramid of numbers and energy
A
Pyramids of energy will be represented as true pyramids no matter the size of the organisms because energy is always lost at each stage of the food chain.
