Answer:
D. guard cells.. this is answer i think..
Hydroelectricity comes from using the kinetic energy stored in the water. When the high pressure through the blades are released, its kinetic energy is transferred onto turbine blades to generate electricity.
Phosphate
Because it is the group of the molecules
Gravity pulls the ball down,and friction slow the ball down.
1. weathering reduces solid rocks to smaller and smaller particles and erosion is the removal and movement of rocks/debris. so u could say that weathering breaks rocks down and erosion takes it away
2. water, wind, gravity
3. vegetation reinforces soil through growing over the loose soil to prevent erosion
1. - loss of fertile land and increased sedimentation in rivers
2. deforestation, agriculture, human induced climate change