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Colt1911 [192]
3 years ago
8

Population growth in the United States is due mainly to _______.

Biology
1 answer:
jeyben [28]3 years ago
5 0

Answer: increase life expectancy

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Which property of water explains why seawater contains over 20 different elements?
Vaselesa [24]
"Universal solvent" is the one property of water among the following choices given in the question that <span>explains why seawater contains over 20 different elements. The correct option among all the options that are given in the question is the first option. I hope that this is the answer that has helped you.</span>
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3 years ago
A 10-year-old boy presents after noticing red streaks in his stool that began yesterday. He also complains of crampy periumbilic
kherson [118]

Answer:

Henoch-Schönlein purpura.

Explanation:

Henoch-Schönlein purpura may be defined as the medical condition of the inflammation of the IgA antibodies in the blood vessels. This condition causes purpuric rash.

This disease mainly occurs on the lower extremities of the body and can show reddish purple patches. This might also cause vasculature and leads to the cramping in the abdominal area of the body.  The stool guaiac test is positive in this condition.

Thus, the correct answer is option (C).

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3 years ago
What cells make up the kidney?
elena-s [515]

Answer:

There are in fact 3 different cells that make up the kidney

Explanation:

The Kidney glomerulus parietal cell.

Kidney glomerulus podocyte.

Kidney proximal tubule brush border cell.

6 0
3 years ago
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British investigators conducted a study to examine measles- mumps-rubella (MMR) vaccine history among 1,294 children with pervas
dezoksy [38]

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B. Case-Control

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A case-control is a study that compares a group with an outcome of interest (cases) with a group who do not have the outcome (controls). This study aims to looks back retrospectively to compare how frequently the exposure to a risk factor is present in each group and with that to determine the relationship between that risk factor and the outcome.

So in this case, the cases are children with pervasive development disorder and the control is those without the disorders.

These studies are normally observational because no intervention is attempted.

6 0
3 years ago
Explain the bonding of a sugar molecule.
romanna [79]

Answer:The chemical or molecular formula for sucrose is C12H22O11, which means each molecule of sugar contains 12 carbon atoms, 22 hydrogen atoms and 11 oxygen atoms. The type of sugar called sucrose is also known as saccharose. It is a saccharide that is made in many different plants.

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3 years ago
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