The answer is A.True but they are not the only ways in which this can occur.
A vaccine works by stimulating the immune system to produce antibodies without actually infecting someone with that disease. They trigger the immune system to produce its own antibodies as though the body has been infected with the disease. But a vaccine will not make someone immune to a disease, it will simply help the body be able fight the infection better.
Answer:
a line graph or a bar graph or anything near that to show that you understand
Explanation:
the beak is what keeps most birds alive
The part of the ATP cycle in which analogous on spending money is ATP is broken down by water to ADP, energy and P. ATP or adenosine triphosphate is defined as a nucleotide that performs many essential roles in the cells and it is also an energy source that is used in living things.
