All of the following cause mechanical weathering . ice
b. tree roots
c. burrowing animals
d. carbonic acid)

Explain what happens at the saturation point when adding salt to water at room temperature.

The heliocentric and the geocentric models of the solar system included these central principles

A1000-kg car is moving at 30 m/s around a horizontal unbanked curve whose diameter is 0.20 km. what is the magnitude of the friction force required to keep the car from sliding?