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