The non-living things in an ecosystem form its components.

How does a porcupine protect itself?

Identify the type of habitat in which each of the following lives or grows. Write T for terrestrial habitat, A for aquatic habitat and T + A to indicate both terrestrial and aquatic habitats.

(i) Lotus 
(ii) Bear
(iii) Fir tree
(iv) Crocodile
(v) Shark

Explain the term adaptation.

Name two salt water habitats.