Which refers to the distance between two crests or two troughs on a transverse wave? wavelength
amplitude
frequency
hertz

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

What are two different ways you could find the value of a? explain these methods.

Why does karst topography exist in some geographic location? a. few climates have enough oxygen b. most regions have rock layers other than limestone c. in most regions, the soil is too thin d. the water is too acidic enough in most places