Which statement best describes how humans obtain groundwater? (this question is from edge) A. They use water that erupted from a geyser.
B. They dig a well and pump out the water.
C. They wait for the formation of a spring.
D. They collect running water from artesian wells.

Protons and neutrons are found within the nucleus of an atom

What is the type of the reaction below? bacl2 + h2so4 → 2 hci + baso4 double replacement synthesis single replacement decomposition

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?