Maximum solar energy may be trapped by

  • A

    Growing grasses

  • B

    Planting trees

  • C

    Growing algae in large water bodies

  • D

    More cultivation of crop plants

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Which one of the following has the largest population in a food chain?

 

Match the following columns.

Column $- I$ Column $- II$
$(a)$ Phytoplankton, grass $(p)$ First trophic level
$(b)$ Man, Lion $(q)$ Herbivore
$(c)$ Zooplankton, Cow, Grasshopper $(r)$ Third trophic level
$(d)$ Birds, Wolf $(s)$ Top carnivore