Jesse wants to know how well a particular brand of car wax protects his car from dirt. Which of the following is a variable that must be kept constant?

a. The use of the car wax

b. How dirty the car gets

c. The kind of car

The body's defense against germs and diseases is called

Most scientists believe the Big Bang Theory explains which of the following questions? A. How our planets and moons formed B. How our Universe began C. How the sun turns hydrogen into helium D. How fast light travels through space

H is a chemical H2 is a chemical A. formula A. symbol B. code B. code

Why is it difficult to measure the volume of gas

A bicyclist in the Tour de France crests a mountain pass as he moves at 15 km/h. At the bottom, 4.2 km farther, his speed is 65 km/h. Estimate his average acceleration while riding down the mountain.

An example of objects the move in revolution

How many hops does a kangoroo do in 1 day

What are the average velocity and average acceleration of the tip of a 2.4 cm long hour hand of a clock?

What is the number one and most important rule to remember in soccer?

Why are convection currents; why are they hotter and colder parts of earth