Geography [4 Mark Question Answer]

The list of the similar things that we do without realizing that we are destroying our environment and the ways that we can behave differently and save are :

1. Leaving The Lights On :
   You’ve probably heard this a million times before but turning the light off when you leave the room, even if you’re only going for a few minutes, really does make a difference to the environment, since it saves a finite source of energy that can’t be replaced.
2. Boiling The Kettle :
   Many people guess the amount of water they need when they boil the kettle, and they end up boiling too much. Boiling a kettle actually uses a lot of power- enough to light a whole household- which also costs the householder money. There are energy efficient kettles available that can help to reduce energy usage, and kettles that measure how much water is needed for a single mug or a pot of tea.
3. Eating Farmed Meat :
   Maybe you’re not ready to take a step in the veggie or vegan direction, but if you’re eating farmed meat, you’re supporting an incredibly environmentally damaging industry. Many acres of rainforest are cleared to grow soy crops and grains to feed cattle, and overgrazing of cattle is a major reason for global soil depletion and source of climate pollution.
4. Commuting :
   Whether you’re flying away on business trips or commuting to work on a daily basis, the way we travel is one of the biggest environmental polluters in our lives. You may not be able to
   give up these habits, but taking steps to reduce them will impact the environment, local pollution levels, and your health.
5. Wasting Paper :
   We live in a world of mass paper usage, where recycling can easily ease an otherwise guilty conscience and prompt even the most devoted re-users to waste paper. We may all be guilty of throwing away pieces of paper that could otherwise be reused at least once, if only for note-taking purposes and to-do lists, but it’s easy to forget that recycling still uses energy, which can be reduced if you decide to reuse.
6. Leaving The Tap Running :
   Whether you’re washing the dishes or brushing your teeth, leaving the tap running while you do so wastes a vast amount of water. It may seem like a small water saving, but soaking dishes before washing them and turning off the faucet while you brush your teeth really does reduce the amount of water you use.
7. Using Plastic Bags :
   It’s hard to make the connection between the single plastic bag you get at the grocery store once a week, and the Great Pacific Garbage Patch. However, there is a strong likelihood that the plastic bags you bring home end will end up in the ocean, or worse. Consider buy a cloth bag instead and make a habit of keeping it in your pocket or bag.

The atmosphere is divided into five layers starting from the Earth’s surface:

1. Troposphere — Its average height is 13 km. The air we breathe exists here. Almost all the weather phenomena like rainfall, fog and hailstorm occur in this layer.
2. Stratosphere — It lies above the troposphere which extends up to a height of 50 km. This layer is almost free from clouds and associated weather phenomenon, making conditions most ideal for flying aeroplanes. It contains a layer of ozone gas.
3. Mesosphere — It lies above the stratosphere. It extends up to the height of 80 km. Meteorites bum up in this layer on entering from the space.
4. Thermosphere — In thermosphere, temperature rises very rapidly with increasing height. Ionosphere is a part of this layer. It extends between 80-400 km. This layer helps in radio transmission. In fact, radio waves transmitted from the Earth are reflected back to the Earth by this layer.
5. Exosphere — This upper most layer. This layer has very thin air. Light gases like helium and hydrogen float into the space from here.

The lowest layer of the atmosphere is called the troposphere. The boundary layer between the troposphere and the stratosphere is called the tropopause.
The troposphere is the layer where we live, where all weather is found. It has water vapor and clouds. The thickness of the troposphere depends upon a number of atmospheric variables at latitude. The troposphere ranges from a thickness of approximately 5.5 mi (9 km) in the polar regions, to a thickness of approximately 10 mi (16 km) in equatorial regions
The tropopause is the boundary layer in the Earth's atmosphere between the troposphere and the stratosphere. It is a thermodynamic gradient stratification layer, marking the end of the troposphere. It lies, on average, at 17 kilometers (11 mi) above equatorial regions, and about 9 kilometers (5.6 mi) over the polar regions.