18) As planets interact with the Sun in our solar system, the force of gravity plays a role in their revolutionary orbit. Which
of these describes how the planets revolve around the sun due to its gravitational pull?
1)
A)
The planets have a linear path back and forth past the Sun.
B)
The planets have a circular path with the Sun at the center of the circle.
The Sun rotates around the planets, which are stationary in the solar
system.
The planets have an elliptical path with the Sun at one of the foci of the
ellipse.
)
D)

Describe the function of the endomembrane system? what organelles are involved?

In the first law of thermodynamics, triangle e=q-w, what does q stand for

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.