Ecosystems

Question 1

What is an ecosystem?

Answer 1

an environment including all the living organisms interacting within it, the cycling of nutrients and the physical and chemical environment in which the organisms are living.
They range in size

Question 2

What is a trophic level?

Answer 2

a trophic level describes the position of an organism in a food chain or web and describes its feeding relationship with other organisms

Question 3

Advantages of pyramids of numbers

Answer 3

easy to count
no organism is killed

Question 4

Disadvantages of pyramids of numbers

Answer 4

doesnt take into account size of organism
difficult to count leaves and grass

Question 5

Advantages of using pyramid of biomass (dry)

Answer 5

gives you the exact mass of organism

Question 6

Disadvantages of using pyramid of biomass (dry)

Answer 6

organism has to be dead
sometimes organisms can belong to 1 or more tropic levels

Question 7

Advantages of pyramids of energy

Answer 7

the most accurate method

Question 8

Disadvantages of pyramids of energy

Answer 8

very difficult to measure