Rainfores are some of the _________ important biomes.

• more

• most

Rain forests are the _________ threatened biomes on Earth.

• more

• most

The demand for ________ expensive meat has resulted in ranchers cutting down trees in the Amazon.

• less

• the least

The________ threat to all of the rain forests worldwide is logging.

• greater

• greatest

__________ rain forests would lead to __________ rain

• Fewer/less

• The fewest/the least

Rain forests have _________ biodiversity than any other ecosystem on the planet.

• greater

• the greatest

Plants in the tundra are _______ and grow _________ to the ground than plants in a forest.

• smaller/closer

• the smallest/the closest

The worldʼs ________ tree grows in the Arctic

• smaller

• smallest

In a forest ecosystem, trees grow ________ than bushes.

• taller

• the tallest

The _________ trees in the world are redwoods.

• taller

• tallest