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A primary pollutant is emitted directly from a source. CO is released from vehicles and industries, whereas O₃, H₂SO₄, and PAN are secondary pollutants formed by chemical reactions in the atmosphere.
A system in which fast growing fodder, shrubs and trees are planted for purpose of mulch green manure soil conservation is
Plants that do not germinate when exposed to light are called as___
Which tropical tree species is rich in vitamin C with multiple medicinal property and extensively used in Ayurveda
...Organs have associated to form functional systems, each system concerned with a specific physiological function. Which of the following organism shows t...
Most plants obtain their nitrogen from the soil in the forms of:
