Problem: What is one way in which energy flow differs from chemical cycling? a) Energy flow is unidirectional; chemical elements can be recycled. b) Energy can enter but cannot leave an ecosystem; chemical elements can leave but cannot enter an ecosystem. c) Energy flows from lower to higher trophic levels; chemicals cycle from higher to lower trophic levels.  d) Energy can both enter and leave an ecosystem; chemical elements always remain within a single ecosystem.

FREE Expert Solution

In an ecosystem:

Energy flow: unidirectional

- energy is transferred from producers to consumers with a loss in energy (as heat) for each step

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Problem Details

What is one way in which energy flow differs from chemical cycling? 

a) Energy flow is unidirectional; chemical elements can be recycled. 

b) Energy can enter but cannot leave an ecosystem; chemical elements can leave but cannot enter an ecosystem. 

c) Energy flows from lower to higher trophic levels; chemicals cycle from higher to lower trophic levels.  

d) Energy can both enter and leave an ecosystem; chemical elements always remain within a single ecosystem.

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