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Force And Laws Of Motion
What are the advantages of inter-cropping and crop rotation?
Inter-cropping and crop rotation both are used to get maximum benefit on limited land.
Inter-cropping ensures maximum utilisation of the nutrients supplied. It helps in preventing pests and diseases to spread throughout the field. It also increases soil fertility.
Crop rotation prevents soil depletion, increases soil fertility, and reduces soil erosion.
Both these methods reduce the need for fertilizers. It also helps in controlling weeds and controls the growth of pathogens and pests in crops.
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Under which of the following conditions are you most likely to fall sick ?
(a) When you are taking examinations ?
(b) When you have travelled by bus and train for two days.
(c) When your friend is suffering from measles.
Why?
Why food is necessary?
What do you mean by health?
‘Public cleanliness is important for individual health’ comment.
Why good economic conditions and gibes are needed for individual health?
How can one be in poor health without actually suffering from a particular disease? Give an example.
Give two examples of how health of a person can depend on his environment.
What we commonly mean by community?
How does personal health relate to community health?
Can you stay well if your home is clean but your neighbourhood is not, why?
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