Which of the following are Tropical Grasslands ?
I. Campos
II. Pampas
III. Savanna
IV. Steppes

Campos and Savanna are tropical grassland. Campos refers to grasslands or pastures with a vegetation cover comprising mainly grasses and herbs; scattered small shrubs and trees are occasionally found, generally by the banks of streams. A savanna is a rolling grassland scattered with shrubs and isolated trees, which can be found between a tropical rainforest and desert biome. Not enough rain falls on a savanna to support forests. Savannas are also known as tropical grasslands.