Answer:
B. It is using stored sugars to stay alive.
Explanation:
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Diatom is a major group of algae. This specific type are single-celled alga consisting of a cell wall made of silica.
The answer is b. blood, Blood is considered a tissue even though it is liquid.
"Water quality" may include the amounts of dissolved oxygen
and the levels of algal growth, pollutants which may be present and the pH level. Water quality effects also which types of organisms can
survive in a body of water.
Shellfish require a high level
of dissolved oxygen and their abundance is an indication of good water quality. Shellfish are sensitive to changes in the ecosystem and they cannot easily escape changes in the water quality. These are one of the reasons why shellfish are good indicators of water quality.