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