Environmental Science MCQs

✅ The correct answer is option A.
The Primary Cause of Global Warming is Ozone Depletion. Atmospheric temperature decreases with altitude in the troposphere and increases with altitude in the stratosphere.

✅ The correct answer is option B.
Energy resources derived from natural organic materials are called fossil fuels.

✅ The correct answer is option C.
Chlorofluorocarbons (CFCs) and other halogenated ozone depleting substances (ODS) are mainly responsible for man-made chemical ozone depletion. The total amount of effective halogens (chlorine and bromine) in the stratosphere can be calculated and are known as the equivalent effective stratospheric chlorine (EESC).

✅ The correct answer is option B.
Relative humidity will increase in a rising parcel of air.

✅ The correct answer is option C.
Environmental studies is an integration of several subjects that include both science and social studies.

✅ The correct answer is option D.
If the absolute temperature of an object doubles, the maximum energy emitted goes up by a factor of 16.

✅ The correct answer is option D.
Air with a 50 percent relative humidity actually contains one-half the amount of water vapor required for saturation. Air with a 100 percent relative humidity is said to be saturated because it is filled to capacity with water vapour.

✅ The correct answer is option C.
All are insitu conservation efforts except zoo.

✅ The correct answer is option B.
The driving force for an ecosystem is solar energy. Plants use solar energy to synthesize their food by the process of photosynthesis. From solar energy, the energy is transferred to plants and other organisms via plants. Thus, the correct answer is ‘Solar energy’.

✅ The correct answer is option A.
Wind-chill or windchill is the lowering of body temperature due to the passing-flow of lower-temperature air. Wind chill numbers are always lower than the air temperature for values where the formula is valid. When the apparent temperature is higher than the air temperature, the heat index is used instead.