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solong [7]
3 years ago
13

A substance in a lab has the following description:

Biology
1 answer:
Vlada [557]3 years ago
4 0
The answer is.D. virus
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All of these people are at risk of vitamin deficiencies
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I will help you narrow it down, because I am not sure how many vitamins you can obtain from unenriched rice, but I do no that any time you would have a deficiency in vitamins, it would be because of not eating enough food that contains certain vitamins in general. So it's between B and C, I am leaning towards B.
6 0
3 years ago
Covalent bond means that the atoms involved will _____. exchange valence electrons gain valence electrons share valence electron
Pie

Answer:

Share valence electrons

Explanation:

Covalent bonds are also known as molecular bonds. This is the type of bond that occurs between non-metals and non-metals. This type of bond can happen between two of the same elements or with other elements that are usually positioned near each other in the periodic table.

This is different from ionic bonds where atoms are lost or gained. This type of bonds occur between metals and non-metals.

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3 years ago
Name 2 structures present in root hair cell that are not present in a red blood cell
vekshin1

Answer:

Root hair cells are alive and therefore need energy, which is why root hair cells contain many mitochondria in them. Root hair cells don't contain chloroplasts. Chloroplasts are used by the plant to make food using light energy. Since the roots aren't exposed to any form of light, they have no need for chloroplasts.

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3 years ago
Which is not a nicotine substitute?
Irina-Kira [14]
D, the herbal cigarettes
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3 years ago
Body systems in the human body work together to support the essential life functions of the body. The urinary system interacts w
avanturin [10]

Answer:

a

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the kidney secretes an enzyme called rennin that helps to control blood pressure is not true the kidney does not secret rennin

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