Which organisms living in the prairie ecosystem are producers?

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

What is one real world example of a colligative property?