peat
alluvial
colluvial
none of these
B. alluvial
arboreal
cursorial
benthos
xeric
CO
Fluorides
plants only
animals only
organisms linked in food chains
all of these
mortality
natality
both and
none of these
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
commensalism
symbiosis
mutualism
cooperation
soil
rocks
animal diseases
locomotion of animals
Allopatric
Autogenic
Sympatric
Allogenic
biosphere
biome
community
ecosystem
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
Ecotype
Littoral
Ecotone
Both and
a part of the earth and its atmosphere which inhabits livings organisms
a community of organisms interacting with each other
the fauna and flora on land
the fauna and flora on ocean
producers
producers and consumers
decomposers and producers
producers, consumers and decomposers
gross primary productivity
net primary productivity
secondary productivity
none of these
Economy in timbering
Clear falling of trees
Prevention of fibres
Preservation of wild animals
methyl isocyanide
phenyl isocyanide
ethylene
acetylene
producers
consumers
predators
decomposers
Soil structure
Wind
Temperature
Climate
limited to industrial areas
presence of large quantity of SO^2 in the atmosphere
a natural phenomenon
presence of CO^2 in the atmosphere
lung diseases
bone cancer
leukaemia
skin cancer
air and water
water and smoke
smoke and fog
fire and water
Tokyo
New York
Calcutta
Mexico
peat
alluvial
colluvial
none of these
Grass > Wolf �Deer -^Buffalo
Grass � Snake �Insect �Deer
Grass -�Insect >Birds >Snake
Bacteria ->Grass ~>Rabbit -�Wolf
community in relation to environment
individuals
environment
water
primary producer
carnivorous secondary consumer
herbivorous
a decomposers
mutualism
commensalism
symbiosis
parasitism
producers
primary consumers
secondary consumers
top consumers in the food-chain
carnivore
primary consumer
secondary consumer
decomposers
sand, silt and clay
silt, sand and clay
clay, sand and silt
clay, silt and sand