601.
Example of omnivores is
A
Lion
B
Hawk
C
Human
D
Snake
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Example of omnivores is
Lion
Hawk
Human
Snake
Eutrophication means
thermal change in water
filling up of water body with aquatic due to extra nourishment
solid waste
none of the above
5th June is observed as
World forest day
World environment day
World wildlife day
World population day
Earthworms and bacteria are called
Producers
Consumers
Decomposers
None of these
Detritus food chain starts from
Green plants
Grass
Dead organic matter
Phytoplankton
Deforestation generally decreases
Rainfall
Soil erosion
Draught
Global warming
Conversion of ammonia to nitrite and then nitrate is called
Nitrogen fixation
De nitrification
Nitrification
Ammonification
Consumers are also called
Photoautotrophs
Saprotrophs
Heterotrophs
Reducers
Chipko movement was started to conserve
Forests
Grasslands
Deserts
Soil
Atomospheric ozone layer which protect us from UV-B & C is getting depleted most by addition of
Chloro flurocarbon
Carbon monooxide
Carbon dioxide
Sulpur dioxide
Atmosphere may extents to a height of about following kms above the earth surface
80 km
8000 km
800 km
8 km
Air pollution is caused by
Insecticides
Sewage
Smoke
Loud speakers
Afforestation is necessary for
Soil conservation
Soil erosion
Well control
Low humidity
According to Thomas Malthus human population increase in
arithmetic ratio
geometric ratio
exponension ratio
all above
71% of earth surface is covered with:
land
air
water
coal
21st March is observed as
World forest day
World environment day
World wildlife day
World population day
Zone consisting air, water and soil is known as
Lithosphere
Biosphere
Hydrosphere
Atmosphere
Word oikos means.............and logos means..............
Only houses
Study of people
Houses and study of
Study and houses
Which of the following statement about the forest is not correct
Provides economic development
None of the above
Forest reduces soil erosion
Provides recreational opportunities
Which of the following is not a method of water conservation
improving irrigation efficiency
avoiding water wastage
rain water harvesting
ground water extraction