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Inessa05 [86]
2 years ago
11

Some evidence that vaccines are effective.

Biology
1 answer:
butalik [34]2 years ago
4 0

Answer:

Vaccines prevent diseases, its just proven. Most Anti Vaccers end up getting Measles, etc. But people with vaccines usually dont.

Explanation:

we are living proof to be honest, i got the chicken pox vaccine and never had it once in my life. Same thing with many other diseases we get vaccinated for.    

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What limiting factor or factors slowed the growth of the human popualtion on easter island? what other factor might limit the gr
Marina CMI [18]

<span>(1)   </span><span>Many assumptions gave rise to a mystery on Eastern island –why it has so slow growth of human population during the old times.  The most common assumption read is that leader Rapa Nui, had greedily used up all the island’s resources leaving nothing for people to use and eat. The reason also why they fall to war and cannibalism. </span>

<span>(2)   </span>Other factors that limit the growth population of an organism are:

<span>·         </span>density-dependent factors like food supply, disease and pollution and density

<span>independent factors like freezing, weather, and drought. </span>
8 0
2 years ago
What is on a transplanted organ that causes the transplant recipient's body to reject it?
Delvig [45]

Answer:

Major histocompatibility complex (MHC) antigens

Explanation:

The process in which recipient body rejects the transplanted organ is called a allograft rejection or transplantation rejection.

A transplanted organ contains Major histocompatibility complex (MHC) antigens which are required to be accepted by the recipient's body to function properly but T cells in recipient's body become alloreactive and recognize MHC antigens (donor-derived antigens) as foreign and starts making antibodies against it. Which means the recipient's body is rejecting the  transplanted organ.

Hence, the correct answer is "Major histocompatibility complex (MHC) antigens".

8 0
3 years ago
Explain the adaptive value of a larger body size at high altitudes.
Vera_Pavlovna [14]
<span>it's colder the higher you go, a big body can retain heat better</span>
6 0
2 years ago
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B) the decay of once-living things
Hope this helps have a great day!
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