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Vikki [24]
3 years ago
11

An explanation of observations or events based on knowledge gained from many observations and investigations is called a

Biology
1 answer:
poizon [28]3 years ago
5 0
We base hypothesis or theories off of data or observations.
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It is necessary for the immune system to clearly distinguish foreign cells and proteins from those made by the body.
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Answer: It is necessary for the immune system to clearly distinguish foreign cells and proteins from those made by the body so that the immune system will be able to fight foreign cells and proteins and eliminate them from the body.

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When the immune system of the body fails to distinguish foreign cells and proteins from those made by the body, the body launches an attack against its cells, that is the immune system triggers an autoimmune response in which attacks are launched against the cells of the body and destroy them. This condition in which the immune system recognizes the cells of the body as non-self and launches an attack against them is known as autoimmunity. Autoimmunity is the major cause of most degenerative diseases such as type I diabetes mellitus.

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Nitrogen and phosphorus are among the elements considered most limiting to plant growth and productivity because they are often present in small quantities locally or are present in a form that cannot be used by the plant.

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