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