Biogeochemical cycles are also known as
Sedimentary cycles
Gaseous cycles
Material cycling
Cyycles of water
Climate of the world is threatened by
Increasing concentration of atmospheric oxygen
Decreasing concentration of atmospheric oxygen
Increasing amount of atmospheric carbon dioxide
Decreasing amount of atmospheric carbon dioxide
The reason for green house effect is
Higher CO2 concentration causing global warming
Absorption of infra-red rays by gases and dust particles
Both A and B
Refraction of CO2
Nitrogen content of biosphere remains constant due to
Nitrogen fixation
Nitrogen cycle
Industrial pollution
Absorption of nitrogen
Phenomenon of rain,dew,snow i.e., different forms of water coming to earth under force of gravity is called as
Geotropism
Climate factors
Precipitation
Calcification
Earth is an
Open system
Closed system
Both open and closed system
Neither A and B
A logical sequence of carbon cycle is
Producer-Consumer-Decomposer
Decomposer-Producer-Decomposer
Consumer-Producer-Consumer
Producer-Decomposer-Consumer
Component of biosphere related with soil is
Lithosphere
Hydrosphere
Atmosphere
None of the above
Ozone layer is found in
Thermosphere
Stratosphere
Mesosphere
Rise of atmospheric temperature because of high concentration of carbon dioxide is known as
Green house effect
Biomagnification
Pollution
Ectone
