Which of the following statements are correct?

  • A
    $A$. The Amazon rainforest being cut and cleared for cultivation of soyabeans is an example of habitat loss.
  • B
    $B$. Steller's sea cow and passenger pigeon became extinct due to over-exploitation by humans.
  • C
    $C$. The Nile perch introduced into Lake Victoria in East Africa helped in population growth of cichlid fish in the lake.
  • D
    $D$. Water hyacinth is an invasive species.

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Given below are two statements.
Statement $I$: $Rauwolfia$ $vomitoria$ found in Himalayan ranges shows variation in potency and concentration of active component reserpine.
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Categorize the following ecosystem services into the appropriate groups: Broadly Utilitarian vs. Narrowly Utilitarian.
$I-$ Industrial products
$II-$ Dyes
$III-$ Construction materials
$IV-$ Pollination
$V-$ Watching spring flowers in full bloom
$VI-$ Watching a bulbul bird in the morning
$VII-$ Lubricants
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