In desert and semi desert regions which of the following causes soil erosion?
flood
breeze
rain
strong winds
The condition of carrying away of soil by the action of water or wind is known as:
soil erosion
soil formation
soil conservation
rock formation
Along river banks which of the following are built to prevent flood?
deforestation
afforestation
embankments
What is the foundation of all life on earth?
sunlight
soil
rock
food
Which of the following causes flood?
storm
heavy rains
Which is the upper most layer of earth?
sand
clay
To prevent which of the following, from getting blown away, farmers grow cover crops such as grass and creepers?
wind
water
plants
Ploughing of which one of the following is yet another human factor that leads to soil erosion?
hill slopes
fields
desert
forest
What do the natural forces like wind, rain and running water help in?
In addition to bushes which of the following are grown along the boundary of the fields?
trees
grass
creepers
small plants