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satela [25.4K]
3 years ago
12

How do vaccines cause the immune system to react

Biology
1 answer:
3241004551 [841]3 years ago
5 0

Vaccines introduce small amounts of dead viruses or harmful cells into the body in order to teach the body how to effectively fight said virus/cell

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A scientist follows this procedure to test whether plants have been performing photosynthesis. Place Plant X in a dark closet an
Igoryamba

Answer:

the scientist obtain that plants perform photosynthesis process in the presence of sunlight and chlorophyll.

Explanation:

they perform photosynthesis process taking water and carbon dioxide in the presence of sunlight and chlorophyll and produce glucose and liberate oxygen gas. Hence sugars are obtained from this process.

5 0
3 years ago
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ou find some rather strange plants in your backyard. They consist only of thin, pale yellow stems that are wrapped around other
deff fn [24]

Answer:

Parasitic

Explanation:

The plants that are described are typical example of parasitic plants. These types of plants have a parasitic relationship with the other plants, at least with the ones that they can use. In order for them to grow, survive, and prosper, these plants need a host plant. They attach to the host plant's steam with their miniature claw like organs, and use them for support to grow upwards, but also to extract nutrients from the host plant. While this leads to to parasitic plant's survival and prospering, the host plant is suffering, and gradually the parasitic plant will suck every nutrient out of the host plant and kill it. Without a host plant, these plants would find it extremely hard to survive, and the chances are very high that they will die because they are not well suited to get nutrient on their own.

5 0
3 years ago
What is ecological footprint
Marina86 [1]

Explanation:

<u>Ecological footprint:</u>

<h3>Is a Measure the area required by an individual, population or activity of biologically produced land and water to produce all the resources it consumes and absorb the waste it generates, using prevailing technology and resource management practices. Hope this helps and have a great day! Good luck </h3>
8 0
3 years ago
You are required to make 10mL of a 0.5M solution of HCl. Your stock solution of HCl is 90M. Using distilled water (dH2O) as a so
sleet_krkn [62]

Answer:

0.0556 mL of 90 M HCl would be taken and 9.944 mL distilled water added to make 0.5 M, 10 mL HCl solution.

Explanation:

From the dilution equation:

<em>Initial molarity (m1) x initial volume (v1) = final molarity (m2) x final volume (v2).</em>

In this case, m1 = 90 M, v1 = ?, m2 = 0.5 M, and v2 = 10 mL

v1 = m2 x v2/ m1 = 0.5 x 0.01/90 = 0.0000556 L

v1 = 0.0556 mL

This means that the initial volume of 90 M HCl to be taken is 0.0556 mL. Since the final volume to be prepared is 10 mL,

 10 - 0.0556 = 9.944 mL

<em>Hence, 0.0556 mL of 90 M HCl would be taken and 9.944 mL distilled water added to make 0.5 M, 10 mL HCl solution.</em>

<em />

8 0
3 years ago
Where does most of the evaporation happening within the water cycle occur?
ikadub [295]
The oceans are by far the largest reservoir of water.
6 0
3 years ago
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