Each bat can produce different frequencies of ultrasound. Explain why this is useful if there are many bats hunting together.

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

Which articulations allow for greatest range of motion?

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air