- effective biocontrol agents ofseveral plant pathogens
- A biological control being developed for use in the treatment of plant disease select correct option on the basis of above sentences
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$I.$ improved varieties of the crops
$II.$ Agro-chemicals
$III.$ Better management practices
Choose the correct option.
Reason $(R):$ Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
In the light of the above statements, choose the correct answer from the options given below.
$I$. They called lungs of the planet
$II$. They harbours probably millions of the species
$III$. They are largest tropical rainforest in south America and has highest biodiversity on earth
$IV$. They are beings cut and cleared for cultivating soya-beans or for the conversion to grasslands for raising beef cattle
Choose the correct option