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Marianna [84]
3 years ago
7

An uncharged atom of calcium has an atomic number of 20 and an atomic mass of 43. How many electrons does calcium have?

Biology
1 answer:
xenn [34]3 years ago
8 0

Answer:

Since it has no charge it would have 20 electrons .

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horsena [70]

Answer:

C is correct ans

Explanation:

Mark my answer as brainliest and thank me

5 0
3 years ago
In those parts of equatorial Africa where the malaria parasite is most common, the sickle-cell allele constitutes 20% of the β h
AnnyKZ [126]

Answer:

gene flow

Explanation:

Gene flow, in simple terms, is a transfer of gene from one population to another. Also called as migration, where there is movement of individuals, and the genetic material they carry from one population to another. It also involves successful breeding of these individuals in their new locations. When people with sickle cell anemia were brought into the US, transfer of the gene responsible for sickle cell disease changed the frequency of the sickle cell allele in overall US population.

3 0
3 years ago
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I need help please can anyone help?
netineya [11]

Answer:

Golgi

Explanation:

It's probably too late, but here is an answer. Think of the Golgi as the warehouse that makes the final changes and ships things out of the cell.

4 0
3 years ago
2.Diffusion occurs from an area of<br> ____ to ____ concentration?
Eddi Din [679]
Of lower concentration and higher concentration
8 0
3 years ago
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Pesticides on foods are stored in body tissues in a process known as
Tom [10]
The Process in which pesticides are stored in body tissues is known as Bio-Accumulation.
When pesticides get into our body through eating food which is not go through the process of metabolism or which is not excreted, that is stored in fatty tissues of the body and as time passes we may build up high concentration of pesticides in our body. Pesticides are the chemical compounds used for killing pests, bacteria etc.
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