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Nitella [24]
3 years ago
6

A Persistent vegetative state(PVS) exists as a result of severe mental impairment, characterized by irreversible cessation of th

e higher functions of the brain, most often caused by damage to which of the following organs?a. cerebral cortexb. cerebellumc. medulla oblongatad. brain steme. heart
Biology
1 answer:
Sergeeva-Olga [200]3 years ago
8 0

Answer: A. Cerebral cortex

Explanation:

The cerebral cortex is responsible for Cerebral cortical function (e.g. communication, thinking, purposeful movement, etc). Damage to this region causes PVS.

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Plant viruses spread throughout the plant by way of __________. View Available Hint(s)for Part A chloroplasts plasmodesmata vert
KatRina [158]

Answer:

Plasmodesmata

Explanation:

Plasmodesmata are microscopic channels which traverse the cell walls of plant cells and some algal cells, enabling transport and communication between them. This is the path that viruses use to spread throughout a plant's system.

Hope this helped! :^)

7 0
3 years ago
CAN SOMEONE TELL ME please
Svetllana [295]

Answer:

The answer is

A. tumor

Explanation:

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3 0
2 years ago
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How does leaf structure best represent the relationship between structure and function? It indicates the maximum height an organ
vova2212 [387]

Answer:

The correct answer is - *It relates directly to the characteristics of the plant's environment*

Explanation:

The relationship between structure and function can be represented by the leaf structure as the structure of a particular plant leaf gives an idea about the characteristics of the environment it is habituated.

In the dry area or deserted area, leaves are modified into spikes to save water in order to lower transpiration, number of waxy coating, number of chlorophyll, and other modifications that give an idea about the environment and light intensity, and other characteristics.

6 0
3 years ago
_______________ can be accidental or intentional, and it can cause erosion.
maksim [4K]
Fire can be accidental or intentional, and it can cause erosion.
3 0
3 years ago
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Life on earth began as the product of chemical reactions which occurred
Kazeer [188]

Answer: Over 4 billion years ago

Explanation: The chemical reactions between carbon and water is said to bring about life according to scientists. These reactions builds largely upon four families of chemicals (lipids, carbohydrates, amino acids, and nucleic acids).

However, the actual time of life on Earth has varying speculations from different scientists in fields of study (such as molecular biology, chemistry, oceanography, etc).

Furthermore, microfossils within hydrothermal-vent precipitates dated from 3.77 to 4.28 billion years is presumed to inhabit the oldest record of life on Earth. Hence, which is presumed to have occurred after ocean formation 4.4billion years ago.

Thus, the actual date of the chemical reactions that brought about life is not rigid, but presumed to have occurred over 4billion years ago (according to research).

7 0
2 years ago
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