Question: what are the four main biomes?
Answer: Tropical Rainforest. You probably picture tropical rainforest as a jungle, where it stays warm all year. ... 
Temperate Forest. This is the kind of forest where there are four relatively distinct seasons. ... 
Desert. ... 
Tundra. ... 
Taiga (Boreal Forest) ... 
Grassland. ... 
Savanna.