The statement that "Newton knew what gravity did but he could not explain why gravity did it is the basic difference between?

The  answer is 1 amu.

Other organisms can change their behavior to take the place of the plants in the ecosystem.

A  reaction  in which  energy  is  released  to the surroundings is called an exothermic  reaction. in this type of  reaction  the enthalpy, or stored  chemical energy, is lower for the products than the reactants. when ammonium nitrate is dissolved in water,  energyis  absorbed  and the water cools.