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noname [10]
3 years ago
12

Why do covalent bonds not involve the transfer of electrons?

Biology
1 answer:
kogti [31]3 years ago
6 0

Answer:

non metals can't accept electrons, that's why they share electrons through covalent bonds

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2. Use the following terms to match the correct example: organism community ecosystem
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Answer:

f

Explanation:

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3 years ago
The three types of seismic waves produced by an earthquake are primary, secondary, and 
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<span>There are three types of seismic waves. These are classified on the basis of their penetration in the earth's surface and their arrival to seismographs. First are primary waves, which arrive first and penetrate the deepest. Then are the secondary waves, which penetrate less and arrive after primary waves. Finally are the surface waves, which do not penetrate the earth's surface and arrive the latest.</span>
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Which of the following present challenges that make gas exchange more difficult for fish than for terrestrial animals? Select al
Oksi-84 [34.3K]

Answer:

A. Water is denser and more viscous than air.

B. Water contains much less O2 than air per unit volume.

E. Diffusion occurs more slowly in water than in air.

Explanation:

The gas exchange for aquatic animals is more difficult than for terrestrial animal because of several reasons like water is denser and vicious than air so the diffusion of oxygen in air is much faster than the diffusion of oxygen in the water.  

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8 0
4 years ago
You will be a scientists and doctors who agree with John Snow. You all believe the contaminated water is responsible for the spr
masya89 [10]

Answer:

well contaminated water has many undefined things or substances

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8 0
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Which of the following is a hypothesis?
Lunna [17]

Answer:

answer is A. a hypothosis is a if, then statement.

Explanation:

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