What distinguishes the brain from the spinal cord? the brain is part of the peripheral nervous system. the brain controls voluntary processes. the brain is part of the central nervous system. the brain contains neurons.

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation: