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Degger [83]
3 years ago
15

Function of semilunar valves in the heart​

Biology
1 answer:
Kipish [7]3 years ago
3 0

Answer: They close to prevent blood from flowing back into the ventricles.

Explanation: To find the semilunar valve is the valve between the left ventricle and the aorta is the aortic semilunar valve.

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Explanation:

In an ecosystem, consumers are heterotrophic organisms that can not make their own food. They rather depend on producers or other consumers for food and nutrition. The organisms that derive their nutrition directly from plants are called primary consumers. They are also called herbivores as they feed on plant and plant products. For example, deer graze grasses. This makes deer a primary consumer and a herbivore.

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Which kind of diagram shows the amount of organic matter in the trophic levels of an ecosystem?
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Pyramid biomass 

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8 0
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iragen [17]

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Does this help?

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Amoeba paramecium and spirogyra are diverse. why then are they all classified as protists
allochka39001 [22]
Even though amoeba, paramecium, and spirogyra are quite different, they are all often classified in the same group, Protista because this group holds various types of eukaryotic organisms that are heterotrophic and unicellular.
This type of classification is not based on evolutionary and genetic similarities, but only on the properties of being unicellular, so there are many vastly different organisms in this group.
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