sand, silt and clay
silt, sand and clay
clay, sand and silt
clay, silt and sand
D. clay, silt and sand
producer only
producers and consumers
consumers only
decomposers only
it contains timber trees
it harbours lions
it harbours elephants
it contains rare animals and plants
carnivore
primary consumer
secondary consumer
decomposers
hair is a good insulating material
hairs trap air which acts as insulator
they like fur
none of these
Allopatric
Autogenic
Sympatric
Allogenic
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
biosphere
biome
community
ecosystem
mutualism
commensalism
symbiosis
parasitism
food web
pyramid of numbers
pyramid of succession
none of these
producers
consumers
predators
decomposers
drought
heavy rainfall
deforestation
heavy winds
peat
alluvial
colluvial
none of these
Fly ash
Hydrocarbon gases
CO
sand, silt and clay
silt, sand and clay
clay, sand and silt
clay, silt and sand
limited to industrial areas
presence of large quantity of SO^2 in the atmosphere
a natural phenomenon
presence of CO^2 in the atmosphere
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
primary producer
carnivorous secondary consumer
herbivorous
a decomposers
Soil structure
Wind
Temperature
Climate
hydrophytes
mesophytes
xerophytes
halophytes
mutualism
commensalism
predatism
parasitism
Grass > Wolf �Deer -^Buffalo
Grass � Snake �Insect �Deer
Grass -�Insect >Birds >Snake
Bacteria ->Grass ~>Rabbit -�Wolf
a biome
a natural ecosystem
an artificial ecosystem
a community of plants and animals
biome
biosphere
community
population
a food chain
trophic levels
food webs
ecosystem
gross primary productivity
net primary productivity
secondary productivity
none of these
light received from sun
heat liberated during respiration
heat liberated during fermentation
none of these
methyl isocyanide
phenyl isocyanide
ethylene
acetylene
greater
lesser
the same
very small
mortality
natality
both and
none of these
Economy in timbering
Clear falling of trees
Prevention of fibres
Preservation of wild animals