Diatoms are producers within the food chain. A unique feature of diatom cells is that they are enclosed within a cell wall made of silica (hydrated silicon dioxide) called a frustule. These frustules show a wide diversity in form, but are usually almost bilaterally symmetrical, hence the group name.
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Answer:
Negative feedback
Explanation:
As we can see, the increase in glucose in the body promotes the release of insulin, which aims to decrease blood glucose levels, that is, the increase in glucose caused an opposite response, which aimed to balance blood glucose levels and let the body in harmony. This opposite response, which determines a result contrary to a stimulus in the body, is called negative feedback.
Answer:
The snout is blunt. Young males and all females have a caudal fin that is truncate to slightly rounded while supermales have a lunate caudal fin. In contrast to most fishes, the bluehead swims with its pectoral fins, appearing to drag its tail. This is an attractive fish with a variety of color phases.
Explanation:
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Answer: it's A.Enzymes lower activation energy.
Explanation:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions.