How much of the earth’s atmosphere is made up of nitrogen and oxygen?

It is primarily composed of nitrogen (78%) and oxygen (21%) with only small concentrations of other trace gases. Nearly all atmospheric water vapor or moisture is found in the troposphere, so it is the layer where most of Earth’s weather takes place.

How many aluminum cans are in a pound?

So using standard 12 oz. pop/beer cans that are rinsed and dry I find that the consensus is that it takes from 32-35 cans to make a pound. There seems to be no exact number because there are variances by brand. So now we basically know about how many cans one has to gather together to make a pound a make some money.

How many miles are in the Pentagon?

The corridors are a total of 17.5 miles long, while the building provides a gross floor area of 6,500,000 square feet. There are 3,800,000 square feet for offices, concessions, and storage. The five-sided center courtyard covers five acres.

How many children did Cleopatra have?

Cleopatra had four children–only one survived to adulthood. Cleopatra’s first child was a son by Caesar. She also had twins, Alexander Helios and Cleopatra Selene, as well as another son, Ptolemy Philadelphos, all by Marcus Antonius.

What determines the pitch of the sound?

Since pitch is such a close proxy for frequency, it is almost entirely determined by how quickly the sound wave is making the air vibrate and has almost nothing to do with the intensity, or amplitude, of the wave.

Why did ancient Egyptians put dead mice in their mouths?

In Ancient Egypt, people put a dead mouse in their mouth if they had a toothache, according to Nathan Belofsky’s book Strange Medicine: A Shocking History of Real Medical Practices Through the Age. Mice were also used as a warts remedy during Elizabethan England.

How much bigger is the sun than the earth?

Even though Jupiter is an enormous, massive planet, it’s much smaller than the Sun. The Sun accounts for 99.86% of the mass of the Solar System. You could fit 109 Earths side by side to match the diameter of the Sun, and it would take 1.3 million planets the size of the Earth to fill it up.