What is the transfer of energy in the form of rays or waves

What is the relation between concentration of reactants and the rate of chemical reaction?

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

How might this scientific phenomena be explained? a paper clip floats on water.