Mixing height during night is typically in the range
Answer: < few hundred metres
At a given urban location, the temperature at an elevation of 25 m above ground is 15 °C. If the inversion conditions prevail and the environmental lapse rate is 1.25 °C per 100 m, the temperature at an elevation of 200 m will be
When the temperature of the atmosphere falls at a rate greater than the dry adiabatic lapse rate, the atmosphere is
Gross Primary Productivity (GPP) of an ecosystem is
Answer: photosynthetic fixation rate of atmospheric carbon dioxide
The oxygen atom species, which reacts with water to form hydroxyl radical, is produced by the photodissociation of
Identify the incorrect statement about carbon isotopes :
Answer: C-13 is used for carbon-dating
Among the following insecticides, which one is relatively more soluble in water ?
Identify the incorrect statement about humus.
Answer: Rate of nitrogen release to plants is slow during warm growing season and fast during winter months
Drugs that prevent the formation of bacterial cell wall are
The predominant bioparticulate allergens in the air are
Answer: Pollen grains and fungal spores
The enhancement of the fitness of a recipient individual by acts that reduce the evolutionary fitness of the donor individual is
The change in species composition that is imposed by factors external to the biotic community is known as
Answer: Allogenic succession
Which ecosystem type produces maximum litter mass ?
Which magma type contains the greatest amount of silica ?
Which group of following factors determine the discharge of a stream ?
Answer: DWidth, depth and velocity