In a sea shore, the benthic animals live in sandy, muddy and rocky substrata and accordingly developed the following adaptations.

$(a)$ Burrowing

$(b)$ Building cubes

$(c)$ Holdfasts / peduncle

Find the suitable substratum against each adaptation.

Which of the following is correct

Exotic species are also called

$I.$ introduced species

$II.$ alien species

$III.$ non-indigenous species

$IV.$ non-native species

Choose the correct combination

Which of the following isolation is important for speciation

For better survival of the human population, which of the following steps is most important?