Answer:
One Idea was the appreciation that the age of the Earth was much greater than had hitherto for been imagined.
Since our bodies are made up of 70 percent water, we need water to keep us from dehydrating, food is important because it has the nutrients and proteins that our bodies need to repair, grow, and keep healthy, and oxygen is also important because it gets carried throughout our blood stream and oxygenates our muscles, without any of these, we would die within a few weeks
Both have a pump that pushes materials throughout the organism.
The cells of the CNS are called neurons. They secrete neurotransmitters.
