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Archy [21]
3 years ago
12

A (n) _______________ is an injection of weakened or dead viruses or bacteria, or pieces of proteins from weakened or dead virus

es or bacteria. It is given to help the immune system of people "learn" how to defeat the real virus or bacteria.
Biology
1 answer:
Law Incorporation [45]3 years ago
5 0
<span>vaccine The wording given is pretty much the exact definition of a vaccine. The key to how a vaccine works is that it provides to the immune system, samples of the surface proteins of the infectious materials. With those samples available, the immune system is able to produce antibodies that react to those proteins.</span>
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The way in which relative distance from the ocean can produce significant differences in climate is termed as .
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Continentality

#FreeMelvin

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3 years ago
Dan has noticed that when he adds fertilizer to his garden soil his strawberry plants seem to grow better. Dan wonders if it is
madreJ [45]

The correct answer is - the variable.

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While this kind of experiment may give Dan some answers, and he might notice differences, still he would have to be more detailed in the experiment to see for sure if the fertilizer is the thing that makes some of the strawberries grow better than the others.

Dan should also put all of the strawberries at places that would receive the same amount of light, experience the same weather conditions, receive the same amount of water, and to be planted in a soil of the same quality. Only like this, after putting the fertilizer, Dan can now if it makes any changes or not.

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limiting factor whose effects impact a population regardless of the population's density

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