Amount of photosynthetic primary productivity

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1. What are the two main factors that limit the amount of photosynthetic primary productivity in marine environments? Explain why the margins of oceans (e.g. along continents) are so rich in life, yet biological productivity is relatively low in the tropical open oceans.

2. The marine environment is home to ~13% of all the animal species known to scientists. Why are there so few marine species? And, why do 98% of the marine species inhabit in or on the ocean floor?

3. In the Marine Reserve assignment you examined data related to marine ecosystems both inside and outside a marine reserve. With these results in mind, describe at least three benefits of marine reserves for marine ecosystems. Describe at least two ways that MPA's also benefit humans.

Reference no: EM132511139

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