33. which stimulus tests the absolute threshold of vision?
a) hair cells of the inner ear
b) electromagnetic energy
c) chemical substances in the air
d) a ticking watch in a quiet room

explanation:

the universal gravitation equation. since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. if the mass of one of the objects is doubled, then the force of gravity between them is doubled.

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.

multiply it by 5 in order for you to understand i cant give an exact answer.