onelinerinfo@gmail.com
Home | About Us | Contact Us
onelinerinfo@gmail.comHome | About Us | Contact Us
|
Q 1.
Define soil erosion?
Ans.
The process of removal of top soil by water, wind or any other pratice is called soil erosion.
|
|
Q 2.
Major cause of air pollution?
Ans.
Burning of Fossil fuel.
|
|
Q 3.
Plastic is?
Ans.
Non-biodegradable.
|
|
Q 4.
Who are the primary consumers?
Ans.
Herbivores.
|
|
Q 5.
The amount of energy that flows from one level to another level is?
Ans.
Only 10%.
|
|
Q 6.
Main function of decomposes?
Ans.
They convert organic matter into i organic substances.
|
|
Q 7.
Who is decomposer in food chain?
Ans.
Decomposer are bacteria, fungi and insects.
|
|
Q 8.
Who comes in the first level of food chain?
Ans.
Autotrophs or producers.
|
|
Q 9.
Define Ecosystem?
Ans.
All the interacting organisms in an area together with non-living constituents of the environment is called ecosystem.
|
|
Q 10.
Examples of natural ecosystem?
Ans.
Forests, lakes and ponds.
|
|
Q 11.
Nature of ozone?
Ans.
Ozone is a natural gas and it is made of three oxygen atoms.
|
|
Q 12.
What will happen if we kill all the organisms I one trophic level?
Ans.
1.Energy flow in food chain will stop
2.Whole food chain will be finished. |
|
Q 13.
Name the environmental friendly practice?
Ans.
Switching off unnecessary lights, fan and ac.
|
|
Q 14.
Define biodegradable?
Ans.
Substance that are broken down by biological processes is called biodegradable.
|
|
Q 15.
Which smell is like a rotten fish?
Ans.
Ozone.
|
|
Q 16.
Food chain?
Ans.
Grass-> goat-> humans.
|
|
Q 17.
Name the layer that protects earth against the ultraviolet radiation from sun?
Ans.
Ozone layer.
|
|
Q 18.
Full form of CFC?
Ans.
Chlorofluorocarbons.
|
|
Q 19.
Name the gas which destroys ozone?
Ans.
Chlorofluorocarbons.
|
|
Q 20.
Which have a smell like rotten egg?
Ans.
Hydrogen sulphide.
|