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Gemiola [76]
3 years ago
10

From the list below, select the enzyme that has high activity in an acidic environment. question 9 options:

Biology
1 answer:
Anettt [7]3 years ago
6 0
D. Pepsin- produced in the stomach
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Which statements are accurate about snowflakes
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They fall from the clouds as ice crystals.

They form around particles in the atmosphere.

They form when water vapor is converted directly to ice crystals.

Explanation:

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How long does it take for a person's cells to all die after clinical death?
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Clinical death is the medical term for cessation of blood circulation and breathing, the two necessary criteria to sustain human and many other organisms' lives.

It occurs when the heart stops beating in a regular rhythm, a condition called cardiac arrest.


Brain injuries start to accumulate almost immediately after Clinical Death.

Full recovery of the brain after more than 3 minutes of clinical death at normal body temperature is rare.

Usually brain damage or later brain death results after longer intervals of clinical death even if the heart is restarted and blood circulation is successfully restored.
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4 0
3 years ago
Cross-sectional views of an artery and of a vein are shown here. identify each on the lines
murzikaleks [220]
I believe, for the artery, they have, an open, circular lumen an a thick media
Veins on the other hand, have somewhat collapsed lumen and a thinner media. Arteries are blood vessels that carry blood out of the heart to other parts of the body, all arteries carry oxygenated blood except the pulmonary artery which carries deoxygenated blood from the heart to the lungs. Veins carry blood from other body parts to the heart, all veins carry deoxygenated blood except the pulmonary vein which caries oxygenated blood from the lungs to the heart.
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Most of Earth's carbon comes from
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Most of Earth's carbon is stored in rocks and sediments. 

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