Answer: The correct option is (At least one member must benefit in a symbiotic relationship.)
Explanation:
Answer:
A food web consists of all the food chains in a single ecosystem.
Explanation:
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Answer:
B
Explanation:
Cumulative means that someone came up with an idea first and someone later built an idea off of that. Kepler basing his laws off of Newton's laws is the only option that uses cumulative knowledge. Everything else is either completely independent or working together neither of which is cumulative.
Answer:

Explanation:
<h3><u>Condensation:</u></h3>
- Condensation is the state when water turns from gas to liquid.
So, when water changes from gas to liquid in the water cycle, it rains.
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I believe the example of an environmental variation in the above question is, A. Marge dyes her hair blue. Variation represents any difference between cells, individual organisms, or groups of organisms of any species caused by either genetic differences or by the effect of environmental factors. Environmental variation is the ability of an organism to alter its phenotype depending on environmental conditions.