How does the sun contribute to physical weathering?
a.) when water is heated, it expands, which causes rocks to break.
b.) minerals in rocks heat and expand at different rates, which causes rocks to break.
c.)the sun has no effect on the physical weathering of rocks.

The ideal gas model is valid if which of the following conditions is true? the gas density is low. the gas density is high. the temperature is low. the temperature is high. the gas density and the temperature are low. the gas density and the temperature are high. the gas density is high and the temperature is low. the gas density is low and the temperature is high.