Infection-causing organism become more and more resistant over time to the very drugs that used to kill earlier versions of them is a great example of

Select the correct answer from each drop-down menu proteins are

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.

What are 3 reasons that natural selection occurs