What is 0.000000199 in scientific notation?

1.99x10^-7

Explanation:

if you move the decimal to the right its always negative. move it to the left its always positive. that is why you have a negative 7.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?