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