The right choice would be A
by experimenting the layers of the earth
Involves actual transfer of electrons
<span><span>Chaetognaths worms </span>are the transparent worms that prey on the other plankton.
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Answer:
1. a population of robins die
2. individual - population - community - ecosystem
3. fluctuating slightly over time
4. all members of a particular species in a specific area at a certain time
5. The caterpillars only eat milkweed plants
Explanation:
I just took and these are answers.