Electron;neutron
Because the neutron has no charge with mass.
the electron has a negative charge but no mass, because it is in the electron cloud.
According to the National Heart, Lung, and Blood Institute, adults need around seven to eight hours. For teenagers they recommend nine to ten, and at least ten for children.
The climate and the weather in location affect the soil. It could make the soil rocky and dry if the climate is cold and obviously dry.
What are high level factors that you would need to measure to inspect improvement in a functioning ecosystem? are drastic climate changes more crucial to an ecosystem than a change in magnitude?