As you drive through mountains, radio stations get harder and harder to hear. This is because the waves must pass through the valleys as they are blocked in by the mountains. This is an example of Question 1 options:

Reflection

Diffraction

Absorbtion

Refraction

diffraction

Explanation:

i dont remember any of these terms so im going off their connotations here

Refraction

Explanation:

Because the waves are not able to go through or pass so they change direction.

every el niño cycle is different. every year.

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

here's your answer.