Question
Identify the correct statement for freshwater ecosystems.
I. There is a seasonal mixing of materials.
II. During the year, oxygen concentrations are vertically uniform.
III. Materials are recycled more quickly than in ocean ecosystems.
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Text solutionVerified
A Freshwater ecosystem is one of the aquatic ecosystems of the earth and includes lakes, ponds, rivers, streams and wetlands. This ecosystem is essential as it not only provides human beings their drinking water, but these are also home to more than 40 percent of the world's fish species. The seasonal changes occur in the freshwater ecosystem with regards to temperature-density relationship and since it contains continuous running water so materials are recycled more quickly than in ocean ecosystems.
So, the correct answer is option D.
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Question 4
Which of the owing statements regarding the maintenance of carbon cycle in the biosphere are correct?a. Plant utilize solar energy to convert and water into cellular materials and produce oxygen that animals consume.
b. Oxygen produced by the plants during carbon assimilation is not a byproduct.
c. Energy used by an animal comes from the oxidation of plant material releasing that escapes into the atmosphere.
d. All decaying organic matter on the earth is ultimately degraded by molds and bacteria to yield that escapes into the atmosphere.
Select the correct answer.
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Question Text | Identify the correct statement for freshwater ecosystems. I. There is a seasonal mixing of materials. II. During the year, oxygen concentrations are vertically uniform. III. Materials are recycled more quickly than in ocean ecosystems. |
Answer Type | Text solution:1 |
Upvotes | 150 |