Which statement best compares a dolphin and a mushroom?

a. both need blood and food.
b. both need food and air.
c. both need lungs and air.
d. both need lungs and blood.

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.