I will mark you brainlist! What human activities can impact surface water and groundwater?

How can water quality be affected by human impact?

Arock is dropped from a cliff and reaches the ground in 2.70s. at the same time another rock is thrown horizontally from the same height with initial x velocity of 0.95 m/s. what distance will in x will the second rock cover?

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

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c