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Give six differences between biodegradable and non-biodegradable with examples???
Explain how ozone layer is formed in the atmosphere???? how does it protect living beings from harmful radiations of the sun ???
Make a forest, grassland & a an aquatic food chain. Name the various trophic levels
What hazardous materials have to be dealt with while disposing of electronic items? How would these materials affect the environment?
Why forest is called biodiversity hotspot?
these days new types of plastic which are said to be biodegradable are available what are they called and whether they do or do not harm the envionment?
In a food chain,if 10000 joules of energy is available to the producer,how much energy will be available to the secondary consumer to transfer it to the tertiary consumer
list examples of photo autotrophs and chemo autotrophs
methods of disposal of non biodegradable waste
how long are various non biodegradable expected to last in our environment?
what are the two main components of our environment ?
Draw and explain Khadin system of water harvesting.
What are natural resources? State two factors that work against an equitable distribution of these resources.
what is the full form of DDT ?
Give an example of aquatic food chain.
Which level shows the maximum biological magnification? Why?
trophic levels? Give an example of a food chain and state the
different trophic levels in it.
What is 10 percent law? Explain with an example how energy flows through different trophic levels.
If the regulations put in place to control the emission of these chemicals have succeeded in reducing the damage to the ozone layer.Has the size of the hole in the ozone layer changed in recent years?
wat are the advantages of disposable paper cups over disposable plastic cups?
What is the difference between saprophytes and decomposers?
How can you help in reducing the problem of waste disposal? Give any two methods
how do food chain gets shortened or howled the shortening of the food chain affect the biosphere?
What is ozone layer and how does it affect the ecosystem?
Suggest three ways to maintain a balance between environment and development to survive.
what are the regulations put in place to control the emission of chemicals that deplet ozone layer have succeeded in reducing the damage to the ozone layer.has the size of hole in the ozone layer changed in recent years?
difference between detrivores,decomposers and scavengers.
All flesh is grass. Comment and explain with the help of an example.
we do not clean ponds or lakes, but an aquarium needs to be cleaned. why?
what are the advantages of cloth bags over plastic bags during shopping?
what will happen if we kill all the organism in one trophic level?
Describe any five modes of waste disposal?
Give any 2 -2 ways in which biodegradable and non biodegradable substances affects the environment?
"energy flow in a food chain is unidirectional."justify this statement
Study the food chain given below:
Grass ---- Sheep or goat --- Man
Algae ---- Fish ----- Man
Who is the ultimate sufferer of using pesticide like DDT on land and in water? Give reasons.
What is slogan of chipko movement ?
Write on the damage caused to forests by the following-
a) Building rest houses for tourists in national parks.
b) Grazing domestic animals in national parks.
c) Tourists throwing plastic bottles/covers and other litter in national parks.
what % of solar energy is trapped and utilised by plants
which bacteria was found in river ganga water indicating contamination
What is biodiversity. Why it is important to conserve biodiversiy ?
the role of decomposers in the ecosystem?
whether leather is biodegradable or non-biodegradable
What methods could be applied to reduce our intake of pesticides which enter the food chain?
what limits the number of trophic levels in a food chain?
why food chains generally consists of three or four steps only?
are these two questions one nd the same?
Explain the phenomenon of biological magnification. How does it affect organism belonging to different trophic levels particularly the tertiary consumer?
what is biological magnification
What are the effects of non biodegradable substances on the environment??
can i have some slogans on reduce, reuse and recycle...pls @'-,-- ♥
the following constitute a food-chain?
wheat and mango
goat and human
cow and elephant
fish and goat
why are crop fields known as artificial ecosystems?
how does study of food chain of an area or habitat help us?
what is the largest biological system in the world?
what is terrestrial ecosystem?
write characteristics of food web?
1)What is the average value for the amount of organic matter that present at each step and reaches the next level of consumers?
what is the impact of human activity on environment
If all waste we generate is biodegradable, what impact may this have on the environment?
How increasing demands for the energy adversely affect our environment?
Why are some substances biodegradable and some are non- biodegradable???
what is watershed management ? how is it use ful to ecosystem?
Why are green plants called producers?
WHY IS WATER KNOWN AS :BLUE GOLD"
Briefly describe the food chain and food web and write why is the foodweb more real than food chain ? At least 3 points.
What would happen if there were no decomposers in the ecosystem?
PREVENTION AND CONTROL MEASURES OF OZONE LAYER DEPLETION
why food chain generally consist 3 or 4 steps
what are organic and inorganic substances?
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