EASY
10th CBSE
IMPORTANT
Earn 100
In the following food chain, only of energy was available to the peacocks. How much energy would have been present in Grass? Justify your answer.
GRASSGRASS HOPPERFROG SNAKE PEACOCK
GRASSGRASS HOPPERFROG SNAKE PEACOCK
Important Questions on Our Environment
EASY
10th CBSE
IMPORTANT
What is meant by garbage? List two classes into which garbage is classified.
EASY
10th CBSE
IMPORTANT
We do not clean ponds or lakes, but an aquarium needs to be cleaned regularly. Why?
EASY
10th CBSE
IMPORTANT
Why is the ozone layer getting depleted at the higher levels of the atmosphere? Mention one harmful effect caused by its depletion.
EASY
10th CBSE
IMPORTANT
"The improvement in our lifestyle has led to the generation of large amount of waste material." List two reasons to justify this statement.
EASY
10th CBSE
IMPORTANT
"The change in packaging has resulted in waste becoming non-biodegradable." Giving two examples from daily life, justify this statement.
EASY
10th CBSE
IMPORTANT
What are trophic levels ? Why are autotrophs considered to be at the first trophic level of all food chains ? State the reason for limited number of trophic levels in nature.
EASY
10th CBSE
IMPORTANT
Draw a diagram showing flow of energy from solar input to a food chain having four trophic levels in an ecosystem. List two inference that can be drawn from the energy flow diagram.
EASY
10th CBSE
IMPORTANT
In 1987, the United Nations Environment Programme (UNEP) forged an agreement to freeze the production of a certain chemical to the year 1986 level. Name the chemical and the manufacturing companies in which this chemical was being mostly used. In what way does this chemical damages the organisms on the Earth?
