(i) Walrus- (c) A polar animal

Walrus is an animal that is most commonly found in the polar region. It is adapted to live in such conditions.

(ii) Cedar- (a) Soft wood tree

Cedar is a softwood tree that is most commonly found in coniferous forests.

(iii) Olives- (f) A citrus fruit

Olives are examples of citrus fruits that are found in the Mediterranean regions.

(iv) Elephants- (b) An animal of tropical deciduous forest

Elephants are found in the tropical deciduous forests.

(v) Campos-(g) Tropical grassland of Brazil

The tropical grasslands are known as the Campos in Brazil.

(vi) Downs- (d) Temperate grassland in Australia

The temperate grasslands are known as the Downs in Australia