Class 10 Biology Our Environment
Our Environment
Class 10 Biology
Chapter: Our Environment
Topic: Waste
https://www.youtube.com/watch?v=Z8q6diXjwsE
Our Environment
Class 10 Biology
Chapter: Our Environment
Topic: Components of Eco-System and Food Chain
https://www.youtube.com/watch?v=zyEKZrkT-TE
Our Environment
Class 10 Biology
Chapter: Our Environment
Topic: Flow of Energy
https://www.youtube.com/watch?v=0HD2EfcmV3Q
Our Environment
Class 10 Biology
Chapter: Our Environment
Topic: Ozone Layer
Our Environment Class 10
Our Environment Class 10
In this paragraph we will study about Our Environment
What is Ozone Layer?
Ozone is O3 (oxygen) which is two atoms of oxygen one molecules of oxygen is made up of two atoms of oxygen.
Oxygen along with water are the two most important components for sustaining life, we cannot survive without oxygen but when this oxygen combines with an atom of oxygen in the presence of UV rays. What we get is ozone and this ozone is poisonous. But ozone also act like a filter at that level it can absorb ultraviolet rays and not allow them to enter the earth and these ultraviolet rays can be very dangerous now if ozone layer is less or is not there then UV rays will reach the earth from sun. It has been observed that they can cause skin cancer that’s why so much of cry about the depletion of ozone layer.
Why Ozone Layer Depleted?
The Technological things like air conditions, like refrigerators that we are using even some perfume they are producing the chlorofluorocarbons and depleting Ozone. So UNEP (United Nation Environment Project) they decided that we must maintain the level of CFC at the 1986 level which means we have to take precautions that too much of emission of chlorofluorcation has to be controlled so that, the ozone layer can be controlled
Flow of Energy – The one percent of solar energy is used by plants once it has reached the green plants it makes food and it became a part of the plant but they eaten by animals, as plant also need lot of energy some of it is used digestion and other activities , some is used for reproduction and growth