Advertisements
Advertisements
Question
What’s the solution?
We have to remove insects from the grain without using insecticides.
Solution
- Let the grain dry in the sunlight. The harsh sunlight does not allow eggs and caterpillars to grow in the grain.
- Keep dried Neem leaves in the container in which the grains are stored. The Neem acts as a repellent for insects.
- Grains like beans are smeared with mud. The mud particles keep the weevils away from infesting the grains.
- The place where grain is stored should be cool and dry. It should be airy. The chances of insect infestations are less in such storage places.
RELATED QUESTIONS
You being an environmentalist are interested in contributing towards the conservation of natural resources. List four activities that you can do on your own.
The number of malaria patients in a village increased tremendously when large number of frogs were exported from the village. What could be the cause for it?
What is meant by 'environment'?
Name the organisms whose uncontrolled activities are damaging the environment.
"Burning fossil fuels is a cause of global warming." Justify this statement.
The compound obtained on reaction of iron with steam is/are :
What substances in the soil are useful for the growth of plants?
Micro-organisms form a part of the environment.
Classify the following as natural or man-made.
sunlight
Classify the following as natural or man-made.
trees
Classify the following as natural or man-made.
chair
Classify the following as natural or man-made.
table.
It is a biodegradable waste.
_______ is the process of converting waste materials into new materials.
Select the mis-matched pair in the following and correct it.
What are the by-products of fertiliser industries? How do they affect the environment?
Explain some harmful effects of agricultural practices on the environment.
