Systemic circulation requires help from which of the following bones, lungs, arteries and veins, or muscles

Excuse ! extra points plus ! super desperate ! the position of an object does not move relative to a reference point. relative to the reference point the object _. a.) is not moving. b.) is moving.

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

Suppose a comet has an orbital period of 309.1 years around the sun. what is it’s average distance from the sun?