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

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.

Can a pig look up?

Pigs have very short necks so they find it very had to look up at the sky. Remember they also have their eyes at the side of their heads. So now, quick experiment: Scrunch you head down to your shoulders, making your neck as short as possible.

Why does grass make us itch?

Usually it’s because tiny edges and bristles on the grass make small cuts on your skin, causing slight itching. You probably can’t see the cuts,but they are called “blades” of grass for that reason.

How far is Pluto from the earth?

1 AU measures the distance of the Earth to the Sun. At its closest point, Pluto is only 29 astronomical units from the Sun (4.4 billion km or 2.75 billion miles). And at its most distant, it can be 49 AU (7.29 billion km, or 4.53 billion miles) from the Sun.

How should you evade an alligator or crocodile?

Crocodiles and alligators are surprisingly fast on land.  Although they are rapid, they are not agile.  So, if being chased by one, run in a zigzag line to lose him or her.

What kind of fish is in imitation crab meat?

Imitation crab or surimi (its Japanese name) means minced fish. The mincing process was developed in Japan almost 1,000 years ago. Imitation crab is made from mild-flavored, white-fleshed fish, usually pollack and/or whiting. The fish is deboned, minced and formed into a paste.

How many rushing yards did Walter Payton have in his career?

Over his entire career, Payton rushed for 16,726 yards, which broke the record for most rushing yards by any NFL player in history, and scored 110 touchdowns. He caught 492 passes for 4,538 yards and 15 touchdowns.

When did Greenwich Mean Time start?

Greenwich Mean Time (GMT) was adopted as the world’s time standard at the Washington Meridian Conference in 1884. This conference also established Universal Time, from which the international 24-hour time-zone system grew. This is why all time zones refer back to GMT on the prime meridian.