Trees may be even bigger climate heroes than we thought

What additional gas do trees absorb besides carbon dioxide?

• Methane

• Nitrogen

• Oxygen

• Helium

Why are trees considered important for the climate?

• They produce fruit

• They absorb planet-warming gases

• They are home to animals

• They provide shade

What did Vincent Gauci's team discover about trees in drier soils?

• They only absorb carbon dioxide

• They do not affect methane levels

• They absorb methane

• They emit more methane

Where did Gauci's team measure methane exchange on the tree?

• At the roots

• Near the leaves

• Higher up on the trunk

• At the base of the trunk

What is the role of microbes in tree bark regarding methane?

• They have no role

• They store methane

• They release methane

• They convert methane to carbon dioxide

How much methane might all the world's forests absorb according to the study?

• 100 million tons

• 50 million tons

• 20 million tons

• 10 million tons

What is a significant source of methane emissions?

• Photosynthesis

• Burning fossil fuels

• Solar panels

• Wind erosion

What did the researchers use to measure methane levels around tree trunks?

• A hygrometer

• A laser analyzer

• A thermometer

• A barometer

What did the study suggest about the importance of protecting forests?

• Forests are only for wildlife

• Forests are not important

• Forests are crucial for slowing climate change

• Forests only provide wood

What did the study find about methane uptake in warmer regions?

• It is slower

• It is faster

• It is the same as in colder regions

• It does not occur