Which statement describes steps involved in the production of hydroelectric power? A. Water falls down a pipe to generate electricity.

B. Potential energy of water is directly transformed into electrical energy.

C. Moving water turns a paddle wheel that helps generate electricity.

D. Falling water turns a turbine that helps generate electricity.

Please help would be greatly appreciated!!

What are similarities and differences of reflection, refraction, diffraction and absorption?

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.