A natural phenomenon that becomes harmful due to pollution
global warming
ecological balance
greenhouse effect
desertification
A complex pattern of feeding relationship that incorporates several food chains are called _____ .
Food chain
Food web
Both a and b
None of these
Which one is biotic components ?
Light
Temperature
Water
Plants
Which of the following is a non renewable resource?
solar Energy
hydrocarbon fuel
flora and fauna
nuclear power
any substance or mixture of substances intended for preventing, destroying, repelling or mitigating any pest.
pesticide
fertilizer
organic manures
none of these
All plants that contain the green pigment called
Xanthophyll
Erythrocyanin
Chlorophyll
Chloroplast
A sequence of organisms linked through the process of eating and being eaten is called .
Organisms that are capable of making their own food are called.
Consumers
Producers
Decomposers
Scavengers
Which of the following wastes cannot be decomposed by bacteria to form compost?
Kitchen wastes
Plastic and polythene bags
dead plants
bodies of insects living in the soil
Air pollution is caused by
Insecticides
Sewage
Smoke
Loud speakers
