_______________ is a mixture of 50 – 90% of methane.
A. Natural gas
B. Air
C. Water
D. Bio diesel
The term “Biocoenosis” was proposed by ________________.
A. Transley
B. Carl Mobius
C. Warming
D. None of the above
IUCN (The International Union For Conservation Of Nature And Natural Resources) headquarters is at ________________.
A. Morges, Switzerland
B. Paris, France
C. Vienna, Austria
D. NewYork, USA
The best way to check soil erosion is by providing adequate trees and _________________.
A. Grass cover
B. Manure
C. Water
D. Sand
Slip erosion is also known as ________________.
A. landslide
B. Earthquake
C. Volcano
D. Floads
Thermal belts are _________________.
A. Pockets of warm air resting on a valley during the afternoon
B. Pockets of cold air resting on a valley floor at night
C. Warmer hillsides that are less likely to experience freezing conditions
D. Cold, below-freezing air found at the top of a mountain
Non-lonizing radiations with specific biological effects are ________________.
A. Gamma rays
B. Beta-rays
C. UV radiations
D. X-rays
In the Northern Hemisphere, this day has the fewest hours of daylight ________________.
A. Summer solstice
B. Winter solstice
C. Vernal equinox
D. Autumnal equinox
Coral reefs in India can be seen in ________________.
A. Himalayan region
B. Andaman and Nicobar Islands
C. Uttarpradesh
D. Maharashtra
Many freshwater animals cannot live for long in sea water and vice versa mainly because of the ________________.
A. Change in N levels
B. Change in the levels of thermal tolerance
C. Variations in light intensity
D. Osmotic problems
E. Spectral quality of solar radiation
