An organism that cannot make its own food called

What is the difference between electrically neutral objects and electrically charged objects

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.