Which rays from the sun is affecting the people who live in the higher altitude areas above the sea level?

• Cosmic rays

• X-rays

• Gamma radiation

• microwave

The dumping of which type of waste becomes a major threat to the environment and soil in this technological era?

• Computer

• Medical wastes

• Polythene

• Plastic

The gas which becomes a potential health hazard which is released to the air by the transportation is?

• Carbon monoxide

• Oxygen

• Fluorine

• Argon

What is the main reason of noise pollution?

• Sonic booms produced by aircraft

• Catering and night life

• Traffic noise

• Construction sites

The gas which has a major role in the Greenhouse Effect is?

• Carbon Dioxide

• Fluorine

• Oxygen

• Neon

Which earthworm is considered as the biggest in terms of its size?

• The Australia giant Gippsland Earthworm

• Dendrobaena Hortensis

• The South African Giant Earthworm

• Nematode Earthworm

The first nutritional order includes.

• Protein

• Plants

• Carbohydrates

• Meat

There is a layer in the upper part of the atmosphere which prevents the sun’s harmful UV rays to enter into earth’s surface and acts as a protective cover for the earth. Name it.

• Ozone layer

• Troposphere

• Mesosphere

• Stratosphere

Which was the worst-ever nuclear tragedy in history?

• Chernobyl, Russia (April 1986)

• Pripyat, Ukrainian (April 1986)

• Hiroshima and Nagasaki (August 1945)

• Pacific Ocean (March 2011)

Name the major cause for ozone layer thinning or depletion?

• The use of chlorofluorocarbon by man

• Propellants

• Solvents

• Manufactured chemicals