Answer:
High in the atmosphere, air pressure decreases. ... A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation.
B. Using fewer fossil fuels, such as gasoline for a car, reduces the emission of harmful pollutants into the air
The stream load 2.1 dissolved the load 2.2 is that the bed load will be 2.3 so the right answers is materials. so the answer is C.