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