Earth’s average temperature would be about than it is now without the greenhouse effect.
A) 20 degrees Fahrenheit warmer. B) 5 degrees Fahrenheit colder. C) 30 degrees Fahrenheit colder. D) 55 degrees Fahrenheit colder.

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.