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