Which gas is found in the greatest abundance in the modern atmosphere?

A. Nitrogen

B. Hydrogen

C. Oxygen

D. Helium

A humpback whale took 12.5 minutes to swim 1,170. Meters south at a constant velocity. What was the whale's velocity? __ meters per minute to the south

Is speed and average speed the same thing?

Which statement about astrology is not true? A. The positions of planets at the time of birth have influence on a person's life. B. Astrology is a pseudoscience. C. Astrology made contributions to the science of astronomy.

The revolving nosepiece of a compound microscope is used to: a. move the condenser up or down b. change the objective lens c. adjust the slide to move the object into view d. change eyepiece lenses

If the gravity of earth changes, would we all get flung into space?

Sound waves can combine to become bigger or smaller true or false

Archimedes supposedly was asked to determine whether a crown made for the king consisted of pure gold (density of gold is 19.3 * 103 kg/m3). According to legend, he solved this problem by weighing the crown first in air and then in water.

What are at least three types of energy involving a microwave

1. At one time, people thought that heat was a substance called

How are magnet'so magnetic force and magnetic field different