Interaction between cows, buffalloes, goats and horses is
more
less
nil
all the above
Trimethyl lead is formed by burning
wood
kerosene
petrol
coal
Algal Phytoplankton are
Volvox
Euglena
Both a and b
none of the above
Hibernation is seen in
Lion
Tiger
Hedgehog
Elephant
Deserts, mountain peaks, deep layers of sea are examples for
biosphere
parabiosphere
ecosphere
none of these
Catalytic converters are used in
automobiles
windmills
poultry farms
dairy farms
Which of the following pollutants damages the nervous system?
carbon
lead
oxygen
Leaves in desert plants are covered by a layer of
Wax
Hair
Fur
Moisture
An ecosystem is a natural unit of
lonosphere
Gas used for killing bacteria in water is
nitrogen
carbondioxide
chlorine
helium
