Answer: A billion years
More information: Generally, an eon actually often refers to an indefinite amount of time
More information: The CO2 levels have risen about 40% since the industrial revolution. As of March 2011, the CO2 level was about 0.04%.
Answer: 8 minutes and 20 seconds
More information: Photons emitted from the surface of the Sun travel across the vacuum of space to reach our eyes.
More information: There are 24 time zones, maybe more. Some time zones are only 30-45 minutes apart.
More information: Jupiter has at least 67 known moons currently, and is the 5th planet from the Sun.
More information: An octopus has two eyes and four pairs of arms... it is bilaterally symmetric. It has a beak, with its mouth at the center point of the arms.
Answer: A Pod
More information: A group of whales is commonly called a pod, a school or a gam.
More information: There are 118 elements on the periodic table, Hydrogen being the first one listed.
More information: Sodium chloride (also known as salt or halite), is an ionic compound representing a 1:1 ratio of sodium and chloride ions.
Answer: -40 degrees
More information: To find the temperature when both are equal, use an algebra trick and just set ºF = ºC and solve one of the equations.