Some scientists hypothesize that the first organic compounds could have been created on Earth by ___.

1 answer:

7 0

Some scientists hypothesize that the first organic compounds could have been created on Earth by the mixing of atmospheric gases containing ammonia, hydrogen, water, and methane at high temperatures. C

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Identify how the physical barriers of the the immune system protect the body against pathogens

BabaBlast [244]

Answer:

They help to stop harmful germs from entering the body

Explanation:

The skin can prevent bacteria and microorganisms from entering the body (unless it is damaged)
Mucous membranes line the mouth and nose and are coated with secretions that fight microorganisms and harmful bacteria
Tears help to clear debris from the eye to prevent infection

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2 years ago

An example of vesicle-mediated transport would be:

WITCHER [35]

An example of vesiscle-mediated transport would be cell secretion by exocytosis.

The reason why this would be an example of vesicle-mediated transport is because all the other types of transport listed here are not something you would call vesicle-transport; the substances don't really get transported in vesicles. This is different in exocytosis where the compounds gets packaged into vesicles.

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2 years ago

During the ________ stage, the placenta is expelled from the uterus.

Taya2010 [7]

Hello there.

Question: During the ________ stage, the placenta is expelled from the uterus.

Answer: It is the placental stage.

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4 0

3 years ago

Empirical evidence is obtained using our human senses, which statement

Inessa05 [86]

The statement “This type of evidence can be checked by others” best explains the importance of empirical evidence in science.

Explanation:

There are all kinds of evidence used in science, but empirical evidence is obtained as a result of repeated experiments and observations. This evidence is used to either support or argue against a scientific theory. Empirical evidence is the preferred evidence since this kind of evidence can be peer reviewed, i.e. reviewed by other scientists and/or researchers. In other words, the experiment can be redone, and the evidence can be tested.

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3 years ago

A client has a high level of carbon dioxide (co2) in the bloodstream, as measured by arterial blood gases. a nurse reviewing the

igor_vitrenko [27]

It will cause vasodilation of blood vessels in the brain.

CO2 is one of the metabolic end products that can alter the tone of the blood vessels in the brain. High CO2 levels cause vasodilation, which may cause headache, whereas low CO2 levels cause vasoconstriction, which may cause lightheadedness. The statements included in the other options are incorrect effects.

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2 years ago