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jek_recluse [69]
3 years ago
5

How did the atmosphere come to be on Earth

Biology
2 answers:
emmasim [6.3K]3 years ago
7 0
Nobody knows it just did 
dimulka [17.4K]3 years ago
7 0
Nobody really knows but a new study shows that gases from outer space formed it
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which definition of the word waste has the most neutral connotation A spend unwisely B useless land C lose strength D unused par
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Answer:

Explanation:

m

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Describe the role. of the liver in regulating the concentration of glucose in the body​
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<h2>Have a nice day!!</h2>
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2 years ago
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What are your thoughts about how the universe formed?
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3 years ago
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1. 1 Water makes up between 70-90% of the weight of most life forms, and nearly all chemicals present in living matter are solub
boyakko [2]

Answer:

The correct model is D.

Note: The first attachment below shows the different models. The second attachment shows the correct structural model of the water molecule.

Explanation:

A water molecule is composed of one atom of oxygen and two atoms of hydrogen.

A water molecule is polar, i.e. it contains positively and negatively opposite ends. The polar nature of the water molecule is due to strong electronegativity of oxygen which results in an uneven sharing of the bonding electrons between oxygen and hydrogen. The oxygen atom attracts the shared electrons more to itself, thereby, it acquires a partial negative charge, while the hydrogen atoms acquire a partial positive charge.

The bond angle between the oxygen and hydrogen atoms is approximately 105°. Therefore, from the first attachment below, the correct model for the water molecule is D.

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