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