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natta225 [31]
3 years ago
7

What part of the Respiratory System works as a gate keeper to prevent water and food from going down the trachea?

Biology
1 answer:
Alexus [3.1K]3 years ago
5 0
The answer is a i.e. epiglottis.
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ycow [4]

Answer:

For the object of to be considered alive , it must have DNA and all the characteristics of living things.

Explanation:

If one is to determine whether the object is alive or not the object should possess all the properties of living things. firstly, it should have the genetic material the DNA without which the cell can't be alive or the nucleus in case of PROKARYOTES. it should have the ability to reproduce, move , to grow and to excrete without which it would not be considered alive.

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Students are investigating the distribution of dandelions using quadrats.
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To be sure that pH of the soil will not affect the distribution of dandelions. They first test the pH of the soil.

To learn more about  pH, refer to the link:

brainly.com/question/1979364

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