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Grassland ecosystem has which type of biomass pyramid?
The distribution of characteristic vegetation of a region is determined mainly by:
Laterite soils are found in area where–
The distance of 1° longitudes on Earth is almost equal to which of the following?
Ozone-hole in the atmosphere is largely caused by the presence of:
Extensive deserts occur in the western tropical regions of continents because:
The main cause of global climatic change is:
Who had used the term “Ecology” first time?
Which one of the following is called North-Easter?
Equator represents: