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