HELP NEEDED 1. What change in Earth's atmosphere allowed life to form?

a
Solar radiation split molecules
b
A meteor strike
c
The formation of the oceans
d
The development of an ozone layer

In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

Metals are good conductors of electricity because they