This component of Earth's physical systems is made up of all of the water on Earth's surface.
the lithosphere
the biosphere
the atmosphere
the hydrosphere

What is the amount of organic matter in all living organisms in a habitat called?

At which boundary does subduction stop occurring, resulting in a mountain range?

The distance a car travels between the time the driver decides to stop the car and the time the driver puts on brakes is called the reaction distance. how does the reaction distance change with speed? a. reaction distance decreases with with speed b. reaction distance stays the same with speed c. reaction distance increases with speed. d. there is not enough information to answer the question