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Crash Course: Ecology- links in the chain

1. in an ecosystem, energy means

2. The size and scope of an ecosystem has a lot to do with the amount of things like ____?

3. If a cricket has 1 calorie of energy, it needed to eat ____ calories of energy from lettuce or something.

4. Organisms only hold onto ____% of the energy they ingest.

5. It’s safest to eat ____ on the food chain.

6. Things higher on the food chains can higher lower concentration of toxics. (Circle one.)

1 Answer

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  1. In an ecosystem, energy means the ability to do work or cause a change.
  2. The size and scope of an ecosystem has a lot to do with the amount of things like available resources, climate conditions, and interactions among different organisms.
  3. If a cricket has 1 calorie of energy, it needed to eat more than 1 calorie of energy from lettuce or something.
  4. Organisms only hold onto about 10% of the energy they ingest.
  5. It's safest to eat lower on the food chain.
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