What action will slow down the rate of a reaction

Are substances released into the environment that in excess amounts cause damage

Which units ate used to measure both velocity and speed? check all that apply

Some tools have graduations to show multiple measurements. for example, a ruler may have graduations for both millimeters and centimeters. when measuring the length of an earthworm, which graduations would allow for the most accurate measurement? millimeters centimeters decimeters meters