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