Growing different types of crops in a piece of land in different season is called
mono-culture
irrigation
crop rotation
manuring
Utensils ,scissors, needles etc., are made from
metals
plastic
rubber
herbs
Which one of the following are the substances that are present in the soil and required for the growth of crops?
Manures
Pesticides
Fertilisers
Nutrients
Which one of the following activities requires the presence of air?
Burning
Respiration
Flying aeroplanes
All of the above.
Which one of the following is NOT a natural resource?
Soil
Plants
Iron
Paper
Water
Forest
Petroleum
Plastic
Which one of the following activities should NOT be done to preserve natural resources?
Recycle materials such as paper, metals, etc.
Use organic manure to maintain the fertility of the soil
Use fertilisers and pesticides excessively in farms
Fix catalytic converters to motor vehicles
Conservation of soil can be done by
contour farming
terrace farming
afforestation
all of the above
Which one of the following animals live in the burrows made in the soil?
Sea lions
Rabbits
Leopards
Elephants
Cultivation of rice,wheat, maize, sugarcane, vegetables, and jute is better in
the black soil
the red soil
the alluvial soil
