Explain the roles of products, reactants, and limiting reactant in a chemical reaction. I NEED SOMEONE TO ANSWER ASAP PLZ PLZ PLZ HELP ME

THIS IS PHYSICAL SCIENCE

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Choose each of the settings that follow and list them below do it ill mark brainliest first object= position= speed= acceleration= second object= position= speed= acceleration=

Which sound characteristic is not affected by the relative motion of an object