In the Northern Hemisphere, this day has the fewest hours of daylight ________________.
A. Summer solstice
B. Winter solstice
C. Vernal equinox
D. Autumnal equinox
A. Summer solstice
B. Winter solstice
C. Vernal equinox
D. Autumnal equinox
A. Gamma rays
B. Beta-rays
C. UV radiations
D. X-rays
A. Himalayan region
B. Andaman and Nicobar Islands
C. Uttarpradesh
D. Maharashtra
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
A. Convection current
B. Ozone
C. UV radiation
D. Aerosols
A. Transparent to sunlight but traps heat
B. Transparent to heat but traps sunlight
C. Used in green-house to increase plant growth
D. Transparent to both sunlight and heat
A. UV-C,
B. UV-B,
C. UV-A,
D. All the above.
A. Crop rotation
B. Improved methods of agriculture
C. Using new seed varieties
D. Irrigation
A. Natality
B. Adaptability
C. Unlimited food
D. Inter species activity
A. Palladium
B. Strontium
C. Uranium
D. Rhodium