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5306

What is the population density of Ageratum sp. of frequency 1,850 on a land area measuring 100m\(^2\)?

  • A. 18.50/m\(^2\)
  • B. 18.05/m\(^2\)
  • C. 0.50/m\(^2\)
  • D. 0.05/m\(^2\)
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5307

Which of the following activities does not control pathogens? 

  • A. exposure to ultraviolet radiation
  • B. use of disinfectants
  • C. eating balanced diets
  • D. destroying the habitats of pathogens
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5308

Which of the following diseases could be prevented by a BCG vaccination?

  • A. Malaria
  • B. Cholera
  • C. Tuberculosis
  • D. Diphtheria
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5309

The main effect of a deforestation is 

  • A. creation of new habitats
  • B. loss of soil particles
  • C. survival of more species
  • D. reduction of carbon(IV) oxide in the atmosphere
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5310

Which of the following resources cannot be conserved?

  • A. mineral resources
  • B. soil and water
  • C. forest and wildlife
  • D. domestic wastes
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