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Sati [7]
3 years ago
8

Which makes viral infections difficult to defeat?

Biology
1 answer:
katrin [286]3 years ago
7 0

The statement 'the immune system must attack the body's own cells' makes viral infections difficult to defeat.

<h3>What is an infection?</h3>

Infection is a type of harm that the organism suffers when pathogenic microorganisms and viruses enter the body.

Pathogenic microorganisms include, for example, bacteria, fungi, and virus entities.

These pathogenic microorganisms/entities have specific antigens which can be recognized by the immune system.

Learn more about virus infections here:

brainly.com/question/1554410

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Which gas most likely affects human health by contributing to global climate change?
11Alexandr11 [23.1K]

Answer:

carbon dioxide

Explanation:

Hope this helps! :)

because with to much of it in the atmosphere it would become harder for us to breath and the affects of oxygen deficiency are bad.

6 0
3 years ago
All of the trees in an orchard were derived from the same rootstock, but half had scion "A" grafted and other half heed a differ
Ostrovityanka [42]

Answer: Option D.

There is not enough information to know way the fruit will look like.

Explanation:

Rootstock is the underground part that is inside the soil.

The scion is the above part that is normally grafted to the rootstock. The scion develop into shoots and give rise to plant leaves, fruits, flowers e.t.c.

Scion is chosen base on the desired characteristics you want the plants to be.

Scion can be choose to get large fruits or pink flowers e.t.c.

The above question did not state what type of scion was chosen or used to produce a desired fruit.

4 0
3 years ago
What is the Photic zone
san4es73 [151]

Answer:

Photic Zone is the top layer, nearest the surface of the ocean and is also called the sunlight layer. In this zone enough light penetrates the water to allow photosynthesis.

Explanation:

https://coast.noaa.gov/data/SEAMedia/Presentations/PDFs/Grade%203%20Unit%202%20Lesson%201%20The%20Open%20Ocean.pdf

4 0
3 years ago
A student conducted an investigation to determine the effect of water temperature on
Rasek [7]

Answer:

http://mairscience.weebly.com/uploads/5/7/8/8/57880837/8th_grade_key_2015_sol_released_test.pdf

Explanation:

6 0
3 years ago
A country that is not growing is characterized by an age structure that is
Hoochie [10]
A country that is not growing is characterized by an age structure that is largest among post-reproductive years. 
3 0
4 years ago
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