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HACTEHA [7]
3 years ago
10

HIGHER ORDER THINKING SKILLS (HOTS] 1. How plants are the ultimate source of food on the earth?​

Biology
1 answer:
Illusion [34]3 years ago
3 0

Answer:

As they produce food by the process of photosynthesis which cannot be done by anyone else. Plants use chlorophyll, CO2 and H2O in photosynthesis( which is a biochemical process). Plants became a cause of life on earth. Hence plants are the ultimate source of food on earth.

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The second test that T cells must pass is activation. During activation, T cells that recognize and bind to molecules normally found in the body are selected. These molecules are called self-antigens and can include proteins, carbohydrates, and lipids. When T cells come into contact with self-antigens, they are able to recognize the molecules and begin the process of activation. During activation, the T cells that recognize self-antigens are chosen over those that do not. This helps ensure that the cells that are selected are those that will not attack the body’s own cells.

Learn more about self-antigens at : brainly.com/question/24468411

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Answer:

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Explanation:

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