Almost all viruses are so small they cannot be seen without an electron microscope, and they often consist of just a nucleic acid (either DNA or RNA) in a protein capsule.
Answer:
A good example of scientific theory repeated many times is the “theory of relativity” proposed by Albert Einstein in 1915 which was tested and repeated in 1919 at the time of solar eclipse which was later repeated again by many scientists.Explanation:
It's a good fact. Hope this helps
Sensory, interneuron, motor
Answer:
muscular system helps move the body
Explanation:
