True, each trophic level gives only 10% of their energy/calories to the next level.
he is probably high he doesn't even know what he is saying
A rain forest would have the most species diversity if you are talking about complex eukaryotic organisms (reptiles, mammals etc), though the polluted lake would have the most simple prokaryotic organisms ( bacteria, protists, fungi etc.)
Answer: yes
Explanation: because In common parlance, theory is often used to refer to something that is rather speculative.
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invasive species cost the United States more than $120 billion in damages every year.