Eath has a large mass, which required motion. a)small/maintain b)large maintain c) small change d) large/ change

Earth has large mass, which required a large force to change its motion.

D) large/ change

Explanation:

According to the Newton’s law of motion, if the object in high mass it requires high force to change its motion. The net force is applied on the object then the velocity of object is constant.  

When the object in motion, the velocity does not change unless the force act on it. Newton kept the first law as to establish the frame of reference. Newton’s law is also referred to law of inertia.

The Newton second law is related to Newton’s law. When the internal force applied between the element, only the force is affect the motion.

explanation:

they can be good for the ecosystem

"a scientist studying a whale and its surroundings would need to understand the structure of atoms in case something was negatively affecting the whale or its surroundings."

explanation:

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