Answer:
Our immune system produces antibodies against that antigen of pathogen.
Explanation:
Injecting an antigen from a pathogen would help our immune system memorize the infection and protect our body from causing of the disease because our immune system produces antibodies against that antigen so when the pathogen enters our body these antibodies attack on that and prevent them of causing infection in the body so that's why injecting an antigen has to be done from the childhood to prevent diseases.
Answer: The infrared radiations can detect the coolest and dimmest space objects.
In general, the coolest and darkest regions of space emit radiations of longer wavelengths. The Infrared telescope is used to find the cool, dim stars by slicing the interstellar dust bands and also measure the temperature of the planet of the solar system. The coldest stars do not emit light so they can be seen with the infrared telescopes only. In the visible region, blue stars are hottest and red are the coolest. The wavelength is inversely proportional to the energy emitted so the hottest stars are in the region of low wavelength in visible region.
Answer;
-The above statement is true
-It is a precaution during dissecting.
Explanation;
Among the precautions while dissecting include;
-When cutting into or dissecting the specimen, it is important to always cut away from yourself and others. To avoid cutting anyone, especially with formaldehyde being used. .
-You should also should not hold the animals while cutting because you could again, cut yourself. Another precaution that should be obvious is Do not eat any part of the specimen.
