The seasons are caused by . the shape of Earth’s orbit

the direction Earth’s rotational axis is pointed with respect to the Sun

the distance Earth is from the Sun

the tides of the ocean

Explain vector addition, triangle method and parallelogram method

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Iwill give brainliest if you answer right : )