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defon
2 years ago
7

In the past, smallpox, which is caused by a virus, was a common, and deadly disease. Now, people no longer get smallpox.

Biology
1 answer:
LenKa [72]2 years ago
3 0

Answer:

Answer is a

Creating memory cells through vaccination

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all plants give out oxygen during day and carbon dioxide during 9 to you agree with this statement give reason​
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Yes, I agree with the given statement.

Explanation:

Plants undergo the process of photosynthesis for the production of their food. In this process, they require the presence of sunlight, carbon dioxide, water, minerals, and chlorophyll. The process of photosynthesis is possible only during the day because sunlight is one of the major components. Carbon dioxide is taken in by the plant through the stomata from the environment. The oxygen is formed as a product of the process and is released in the environment. This process becomes impossible during the night because of the absence of sunlight. The entire process sums up to that the plants give out oxygen during the day and give out carbon dioxide during the night.

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3 years ago
There is the picture to the question
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Reflect: write just a few words about
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Glucose: is a simple sugar which is an important energy source in living organisms and is a component of many carbohydrates.

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Ribose: is a kind of sugar that is produced by the body. It is used as a medicine. Ribose is used for heart disease, mental function, athletic performance, chronic fatigue syndrome (CFS), fibromyalgia, and many other conditions, but there is no good scientific evidence to support these uses.

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Explanation:

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