Which of these statements are true? Check all that apply. 1. The two most abundant gases in the atmosphere are nitrogen and oxygen. 2. Most of the gases that make up the atmosphere are located close to the Earth's surface. 3. The atmosphere consists of a homogeneous mixture of gases.

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

Bag of bolts weight 29.4n