Answer:
Viruses are microbes which don't need any nutrition. They don't grow,depend on food etc. Respiration is required to break down complex food materials in any organisms. Hence, virus not being to consume any food and depend on the energy of hosts; virus can't respire.
Answer:
A
Explanation:
It helps the human body do task like lifting heavy things
Small intestine, That's because they're long which enables a wider work for enzymes and digestive juice.
Even when asymptomatic, the virus can still be actively multiplying and killing cells in the immune system that help fight pathogens. This is further explained below.
<h3>What is a
virus?</h3>
Generally, the virus is simply defined as a virus consisting of a core of genetic information, either DNA or RNA, wrapped by a capsid, which is a protective covering formed of protein.
In conclusion, It is possible for the virus to be actively reproducing and destroying immune cells even in the absence of any outward symptoms.
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A genetic outcome of a genetic cross between the same parents is independent of previous outcomes.
<h3>What is genetic variation?</h3>
Genetic variation can be defined as the genetic poll of an organism, which is the raw material trough which evolution can occur by natural selection.
During sexual reproduction, the formation of gametes generates different genetic backgrounds which are independent of distinct gametes.
In conclusion, each genetic outcome of a genetic cross between the same parents is independent of all previous outcomes.
Learn more about genetic variation here:
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