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