15 points❤ I only have 6 minutes please help

Compare and contrast refraction of light and sound will give brainliest

To find the enthalpy of a reaction in the lab, you measured the of the reactants and the change during the reaction.

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features