Does earth’s gravitational force field act on objects that aren’t touching earth’s surface?

What happens when the cell copies its chromosomes

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

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.