According to newton's first law of motion, what is required to make an object slow down? enter your answer in the space provided.

According to newton's first law of motion, friction is required to make an object slow down.

Explanation:

According to the Newton's first law of motion, for an object to change its velocity (either a change in the magnitude or the direction), there must be a cause to it which is defined as a net external force.

For example, an object which is sliding across a table or floor slows down due to the net force of friction that is acting on that object.

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide