Questions

The layer of air around the earth is known as Atmosphere. And this atmosphere has 4 layers like troposhere, stratosphere, ionosphere and mesosphere.

The correct order of events during meiosis is:

prophase I,

metaphase I,

anaphase I,

telophase I,

cytokinesis, and

meiosis II.

Natural gas is primarily composed of methane, but also contains ethane, propane, and heavier hydrocarbons.

Natural gas is a colorless, tasteless, odorless, and non-toxic gas. Because it is odorless, mercaptan is added to the natural gas, in very small amounts to give the gas a distinctive smell of rotten eggs. This strong smell can alert you of a potential gas leak.

It also contains small amounts of nitrogen, carbon dioxide, hydrogen sulphide and trace amounts of water.