When a scientist contrasts two or more objects what is he or she looking for? a. differences b. causes and effects c. changes d. errors which is it?

What percentage of light hits earth's surface directly?

Which feature of a human community is similar to a niche in a biological community

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.