Four fundamental forces
<span>gravitation
electromagnetism
the weak interaction
the strong interaction.</span>
Genetic Change in Viruses. Viruses are continuously changing as a result of genetic selection. They undergo subtle genetic changes through mutation and major genetic changes through recombination. Mutation occurs when an error is incorporated in the viral genome
Answer:
B
Explanation:
Nerve cells can carry signals and connect all parts of the body to the brain