The savanna gets a fair amount of rain, at least 20 inches a year.
Winter and fall
Spring and summer
Dry and wet
Winter and summer
Growing quickly
All of the above
Having deep roots
Developing fire-resistant cover
They have thorns
They have toxic chemicals
A combination of the above defenses
Ants protect them
Their territories don't overlap
They all migrate in different directions
They avoid each other as much as possible
They eat different foods
Tundra
Grassland
Temperate forest
Desert
North America
Antarctica
Asia
Australia