Ecology is made up of <span> the science of biology.
</span>When it comes to ecology, you study your natural surroundings.
C. Sending a message to the pituitary gland to start producing a hormone when the levels in the body are low.
If the mass of both of the objects is doubled, then the force of gravity between them is quadrupled; and so on. Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational force
