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