CAT Questions

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Practical

Pest infestation is nothing but the presence of large number of pests at a place, typically so as to cause damage or disease.

Climatic conditions affect a considerable number of pests. Some are more active during warmer periods than others. As these summer insects invade your home, they're likely in search of food, water, shelter, or have encountered an entrance. To pest-proof your home this summer, it's best to remove their 'WHY’ or reason for entering your home.

* Keep your place clean and dry. Make sure there is no food laying about.

* Removing food residue - food is a common attraction to a number of different pests.

* Regular disinfection of the surfaces.

The sound is what can you hear but not touch or see.

Groundwater is all the water that has penetrated the earth's surface and is found in one of two soil layers. The one nearest the surface is the "zone of aeration", where gaps between soil are filled with both air and water. Below this layer is the "zone of saturation", where the gaps are filled with water.

Photosynthesis is the process that takes place in leaves that converts light energy into chemical energy or sugars. It occurs in the presence of chlorophyll that is present in leaves as a green pigment, carbondi oxide and water with the help of sun light. So the energy for photosynthesis come from sun light.