This a quiz over ecosystems and biomes.
Frogs
Camels
Antelopes
Polar bears
Oxygen
Water
Food
Sunlight
Plant-eating animals (herbivores)
A thick canopy of leaves overhead
Cacti that hold large amounts of water
Trees that lose their leaves in the winter
Temperate forests
Tropical rainforests
Deserts
Grasslands
Food
Water
Shelter
Waste disposal
All of the above
Wait!
Here's an interesting quiz for you.