Class IX

Carnivore animals are classified as
  1. assimilators
  2. competitors
  3. communicators
  4. predators
Interaction between two plants or animals of different species is classified as
  1. predation
  2. competition
  3. symbiosis
  4. commensalism
Cyanide (CN-), fluorine (F2), Sulfur dioxide (SO2), phenol (C6H5), carbon dioxide (CO2) and carbon monoxide (CO) are pollutants released by
  1. textile industries
  2. steel industries
  3. fertilizer industries
  4. thermal industries
Organisms who kills, attacks and feeds others are called
  1. prey
  2. predators
  3. predators
  4. competitors
Ecosystems of world are together classified as
  1. ecosystem
  2. population
  3. abiotic community
  4. biosphere
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