Which of the following statements is not true about how each of the world’s major biomes is defined?
i. each biome is defined by certain soil conditions.
ii. each biome has a characteristic community of plants and animals.
iii. each biome is defined by the name of the country that it is in.
iv. each biome is defined by climate.
a. i and ii c. i and iv b. ii and iii d. iii only