(Brainliest Question)

What is one method being used to reduce surface water pollution?
A
banning the use of all detergents, fertilizers, and pesticides in the U. S.

B
placing skimmers in all waterways

C
treating wastewater before releasing it into the environment

D
requiring all companies to have employees responsible for cleaning local waterways

What is being done to reduce the pollution that causes smog and acid rain?
A
More desalination plants are being used.

B
Some power plants now burn oil instead of coal.

C
More cars are being made in other countries and imported to the United States.

D
Laws have passed that require industries to lower the amounts of certain gases that they release.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.