air and water
water and smoke
smoke and fog
fire and water
C. smoke and fog
Economy in timbering
Clear falling of trees
Prevention of fibres
Preservation of wild animals
predator
prey
host
parasite
it contains timber trees
it harbours lions
it harbours elephants
it contains rare animals and plants
a food chain
trophic levels
food webs
ecosystem
Grass > Wolf �Deer -^Buffalo
Grass � Snake �Insect �Deer
Grass -�Insect >Birds >Snake
Bacteria ->Grass ~>Rabbit -�Wolf
biosphere
biome
community
ecosystem
producers
consumers
predators
decomposers
peat
alluvial
colluvial
none of these
soil
rocks
animal diseases
locomotion of animals
A.G. Tansely
H.T. Odum
Karl Mobius
None of these
Allopatric
Autogenic
Sympatric
Allogenic
chemical factors of soil which affect life
physical factors of soil which affect life
all living organisms which influence other organisms
factors of atmosphere which affect life
hair is a good insulating material
hairs trap air which acts as insulator
they like fur
none of these
food web
pyramid of numbers
pyramid of succession
none of these
sand, silt and clay
silt, sand and clay
clay, sand and silt
clay, silt and sand
air and water
water and smoke
smoke and fog
fire and water
commensalism
symbiosis
mutualism
cooperation
limited to industrial areas
presence of large quantity of SO^2 in the atmosphere
a natural phenomenon
presence of CO^2 in the atmosphere
gross primary productivity
net primary productivity
secondary productivity
none of these
carnivore
primary consumer
secondary consumer
decomposers
community in relation to environment
individuals
environment
water
producers
producers and consumers
decomposers and producers
producers, consumers and decomposers
lung diseases
bone cancer
leukaemia
skin cancer
plants only
animals only
carnivorous animals only
organisms linked in food-chains
Soil structure
Wind
Temperature
Climate
Tokyo
New York
Calcutta
Mexico
primary producers is larger than that of primary consumers
secondary consumers is the largest because they are most powerful
primary consumers is the least dependent upon primary producers.
primary consumers outnumber primary producers
Fly ash
Hydrocarbon gases
CO
Ecotype
Littoral
Ecotone
Both and
greater
lesser
the same
very small