What is a rate in science?

What is the mathematical formula for speed uding the variables stride frequency and stride length? Was James Hutton an enemy to Charles Darwin? What are 3 ways scientist generally try to get rid of a virus? 79 centimeters equals how many inches? What is the difference between experimental variable and a control variable? Why do scientists use a control in an experiment? What the choice that best completes the following sentence. When an axe is used to chop wood? What is the difference between a and an in a sentence? How many insects in a kilometer? What are the functions of the external nares in humans? If oxygen gas is collected over water at temperature of 10C and pressure of 1.02 ATM and the volume of gas plus water vapor collected is 293 mL then what volume of oxygen at STP was collected? What are the advantages of an aluminium sliding door versus one made from PVC? What is earths freshwater percentage? Are there types of carpet that cannot be steam cleaned? Can an elephant have the same momentum as a golf Ball? What are the 3 questions from Pandora box to turn on women? Can UV rays go through wax paper? A theory of explanation that is based on observations and that can be tested? The expansion of matter when it is heated is known as? How does the tough outer shell of a coconut protect the seed as it travels?