Growing plant in the forest help to increase the amount of ________.
Nitrogen
Oxygen
Carbon dioxide
In food chain plants are called ______.
Producers
Consumers
Decomposes
Plankton
The ultimate source of energy on earth is _______.
Sun
Earth
Mars
Moon
Burning of fossil fuels release ________ to the air.
Carbon
The malaria preventive medicine _________ is made from cinchona plant.
Quinine
Vascine
Morphine
Reserpine
______ is the cycle in which water interchanges between the surface of the earth and the atmosphere .
Hydrological cycle
Hydrogen cycle
Oxygen cycle
Carbon cycle
_________ is a greenhouse gas.
oxygen
Hydrogen
_______ is an Indian tree planting festival which is celebrated for a week in the month of July.
Chipko movement
Vana Mahostav
None
None of these
________ ecosystem is placed between terrestrial ecosystem and marine ecosystem.
Coastal
Neritic
Pelagic
Benthic
Human beings are ________.
Carnivores
Herbivores
Osmotrophs
Omnivores