Hot in daytime, cool or cold at night; very dry; organisms are adapted to extreme temperatures and dry conditions.

Warm summers, cold winters; receives at least 50cm of precipitation per year; trees shed their leaves and grow new ones each year.

Warm, rainy summers; very cold winters with heavy snow; trees produce cones with seeds that are eaten by many animals.

Warm temperatures do not vary much throughout the year; very wet and humid; greater variety of species than any other biome.

Extremely cold winters, warmer summers; windy; very dry; no trees, only low-growing plants.

Receives between 25 and 75 centimeters of rain each year; populated by grasses and many large herbivores.

Tropical rain forests cover a small part of the planet, yet they contain more species of plants and animals than all other biomes combined.

Rain Forests are home to many of the largest animals on Earth.

In a boreal forest biome, many trees shed their leaves and grow new ones each year.