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It’s a green world
In this food web, what is represented by the arrows?
Change in biomass
Reduction in numbers
Which of these organisms is a producer?
What's the longest food chain in this food web?
Two trophic levels
Three trophic levels
Four trophic levels
For this particular food web a pyramid of biomass would be widest:
At the top
In the middle
At the bottom
Which of the following is NOT a renewable form of energy: