Wind causes weathering of rocks through:
- Chemical change.
- Abrasion.
- Mechanical force.
- Frost action.
285 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
M.C.Q-[Bio-1M]
79 Q→02Fill in the blank [Bio-1M]
6 Q→03True-False [Bio-1M]
15 Q→04Do as directed; [Bio-1 M]
62 Q→05Answer the questions.[Bio-2M]
64 Q→06Answer the questions.[Bio-3M]
58 Q→07Answer the questions.[Bio-5M]
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Wind causes weathering of rocks through:
Wind breaks are:
Why water is necessary for living organisms? Explain.
Who is popularly known as ‘water man’?
Which one is inexhaustible resource?
Surface temperature of moon varies from -190° to __________.
__________ makes soil porous and allows water and air to peneterate deep underground.
Earthworms are __________ which are involved in paedogenesis.
CFCs are carbon compounds having both ___________ and chlorine.
Atmosphere of Mars is rich in ____________.
Winds develop due to uneven heating of Earth.
The amount of rainfall directly influences the abundance and diversity of life forms.
Soil is topmost layer of crust of Earth.
Soil has no role in supplying nutrients to awuatic biota.
Rhizobium leguminosarum is a nitrogen fixing bacteria which occurs in the soil.
Write down the composition of air.
Why ozone layer is called ozone umbrella/ shield?
Why is life not possible on Venus and Mars?
Why air is called "breath of life"?
Which one determines the density and richness of biota?
Write a brief note on acid rain.
Why is life on Mars and Venus planets not possible?
Why is lead compound added to petrol? What is its harm?
Where is the major part of fresh water bound up?
What was non-biodegradable substances?
Write down some methods of prevention of soil erosion.
Write a note on nitrogen fixation?
Why lead compounds are added to petrol? How is it harmful?
Why is air called breath of life? Enumerate functions of air in atmosphere.
Where and how are clouds formed?
Define soil erosion. Give its causes, effects and preventive measures.
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