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Q: List 3 major factors that are thought to control phytoplankton growth in the ocean. Rank these…
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Q: algae blooms cause dead zones where living things die because of lack of what
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Q: which mode of reproduction is more advantageous in terms of promoting biodiversity? Why?
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Q: Describe the causes and consequences ofeutrophication
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Could there be any advantage for a Phytoplankton cell to not minimize the sinking rate? Explain.
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- Red algae are considered an important keystone species in the marine environment. Explain why.Do zooplankton have a compensation depth? If so, would it be above, below, or at the same level as the compensation depth of most phytoplankters?In ponds where there are viable fish and plant populations, algae are seldom seen. Explain why this might happen.
- Why are residence times much longer in forest ecosystems than in aquatic phytoplankton-based ecosystems?would an ecosystem be able to survive without the consumers and the decomposers and its ditritus feedersExplain the "phosphate trap" in the estuary of Chesapeake Bay. Why was a local ban on phosphorus in detergents not particularly helpful in mitigating eutrophication in the estuary?
- In Eutrophication, excess nutrients can cause algal blooms. However, what happens when the algae eventually die? Bacterial – Increase or decrease Oxygen – Increase or decreaseWhich of the following would not be included in a description of an organism’s niche? a. its trophic level b. the humidity and temperature it prefers c. when it reproduces d. its number of chromosomesFigure 20.12 Which of the following statements about the nitrogen cycle is false? a. Ammonification converts organic nitrogenous matter from living organisms into ammonium (NH4+) . b. Denitrification by bacteria converts nitrates (NO3) to nitrogen gas (N2) . c. Nitrification by bacteria converts nitrates (NO3) to nitrites (NO2) . d. Nitrogen fixing bacteria convert nitrogen gas (N2) into organic compounds.
- which of the following statements about algal bloom and eutrophication is true? 1. Eutrophication is typically caused by the removal of nitrogen and/or phosphorus 2. algal blooms cannot produce toxic substances that threaten drinking water 3. when algae in an algal bloom die, decomposition produces excess oxygen, which can kill fish 4. algae populations grow when limiting nutrients become more availableDescribe the causes and consequences ofeutrophicationThinking about biological magnification of toxins, is it healthier to feedat a lower or higher trophic level? Explain
