Advertisements
Advertisements
प्रश्न
Give reason for the following.
Mosquitoes can be controlled by preventing stagnation of water though they do not live in water. Why?
Advertisements
उत्तर
Though mosquitoes, live on land, water is their breeding ground their larvae grow in water. Water stagnation is the collecting of water in a small area, without any activity. Mosquitoes lay eggs on such a surface.
If water stagnation is prevented, their larvae cannot survive, thus reducing the mosquito population.
APPEARS IN
संबंधित प्रश्न
Drying the food grains from forms under the hot sun is called ______.
Name any two naturally occuring toxic substances in food.
In the soil, which nutrient is enriched by blue-green algae (cyanobacteria)?
Give reason for the following.
Raw vegetables and fruits are kept in refrigerators, whereas jams and pickles can be kept outside.
Smoking is a method of food preservation used for ______.
Why do we need to preserve food?
Why do we store bananas at room temperature?
Why is food preserved?
What shall we do?
We need to protect foodstuffs from pests like rats, cockroaches, wall-lizards, etc.
Find the odd-man-out.
