<span>a.Prenatal stage of a human up to 8 weeks of development after fertilization.
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Declining krill populations will have catastrophic consequences for ecosystem homeostasis and it will increase the levels of phytoplankton.
<h3>What is ecosystem homeostasis?</h3>
The term ecosystem homeostasis makes reference to the state of equilibrium between different species in an ecosystem.
Krill are fundamental primary consumers in aquatic environments and they eat autotrophic phytoplankton. 
In conclusion, declining krill populations will have catastrophic consequences for ecosystem homeostasis and it will increase the levels of phytoplankton.
Learn more about ecosystem homeostasis here:
brainly.com/question/1514975
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Answer:
Warm water can be found near the equator because it is a warm tropical environment and near volcanoes. 
Explanation:
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Continued deforestation will most likely lead to increased the numbers of endangered species.
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-Charlie