Laura can use a toy car to demonstrate the force of gravity by doing which of these? Letting the toy car roll down a ramp
Placing the toy car on the floor
Lifting the toy car onto a shelf
Pushing the toy car across a table

Which statement best describes the function of enzymes?

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.

How does climate change cause the ocean's thermohaline current to slow down?