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Inessa05 [86]
3 years ago
8

Which elements atoms have 2 electrons in the first energy level and 4 electrons in the second energy level?

Biology
1 answer:
Basile [38]3 years ago
4 0

Answer:

Carbon

Explanation:

Carbon has 2 electrons in the first energy level and 4 electrons in the third energy level.

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During pregnancy a woman's blood volume increases to accommodate the growing fetus to the point that vital signs may remain with
Nat2105 [25]

Answer:

The correct answer is - 40%.

Explanation:

The condition of the shock in an individual occur if she experienced the blood loss 40 % or more of her total blood pressure during pregnancy as she require enough amount of blood for the essential body organs to function.

As the fetus grow the women's blood volume is also increases to accommodate accordingly. This condition leads to blood loss of the mother. The critical limit is 40% of total blood.

Thus, the correct answer is - 40%

5 0
3 years ago
Nitrogen in plants and soil is changed into nitrogen compounds by _____.
goldfiish [28.3K]
Nitrogen Fixation. It's the process by which atmospheric nitrogen is converted either by a natural or an industrial means to form of nitrogen such as ammonia.
4 0
3 years ago
What leads to long-term immunity in mammals? A. Exposure to an antigen B. Action of an antibody C. Barriers
jeyben [28]
Exposure to antigen as this input brings the total to five answers. y or n
7 0
3 years ago
Hypothesize how over-washing of hands can affect the population of ""good"" bacteria that resides on human skin.
asambeis [7]

Answer:

The human body inhabits various microbes, which coexist and does not cause any kind of harm, these bacteria are considered as good bacteria and are known as microbiota. Even the skin comprises various categories of bacteria, that is, more than 500 species. These microbes demonstrate skin microbiota, that is, an effective system of safeguarding, which takes place in immune defenses.  

The beauty of the skin is nearly associated with the balance of the microbes, which populate it, these are considered as the first line of defense from outside threats. When the bacterial ecosystem is differentiated and balance, the skin stays healthy.  

It has been hypothesized that over-washing of hands diminishes the population of good bacteria from the skin. As it is considered that over-washing extricates the majority of the beneficial bacterial cells from the human skin. Hence, may result in the loss of natural microflora from the section of the skin.  

7 0
3 years ago
Foodborne pathogens often require the presence of a large number of microbes before an active infection results. These microbes
Dvinal [7]

The virulence of the microbes should be high to cause an active infection.

Explanation:

Virulence is the actual potential or ability of a pathogenic microbe to infect a host. Even with a high median infectious dose to cause an infection, it is the virulence which defines the level of pathogenicity or ability of the pathogens like the foodborne pathogens to cause and active infection.

An active infection is caused when virulence of the pathogen is high. The virulence factors are surface receptors, surface coats, and toxins.

Virulent bacteria cause active infection by adhesion, colonization, invasion, immune response inhibitors, or as toxins. A virulent virus replicates rapidly and modifies the host’s defensive mechanism

8 0
3 years ago
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