During a science quiz, Daniel, Hannah, and Abigail were asked: What is the main form of carbon in the atmosphere? Can you help them answer this question?

• Carbon dioxide

• Methane

• Hydrofluorocarbons

• Oxygen

Benjamin, Abigail, and Emma are having a debate about where plants store carbon. Can you help them settle the debate?

• Atmosphere

• Soil

• Ocean

• Vegetation

Avery, Aria, and David are having a debate about which of the following contains a lot of carbon. Can you help them settle the debate?

• Coal

• Water

• Air

• Sun

Abigail, Elijah, and Benjamin are having a debate about plants. They want to know the process by which plants take in carbon dioxide from the atmosphere. Can you help them?

• Photosynthesis

• Respiration

• Decay

• Burning

Arjun, Lily, and Nora are on a marine adventure to explore the world of phytoplankton! What happens to carbon when phytoplankton die?

• It is recycled back into the surface ocean

• It precipitates down into the deep ocean

• It forms sediments at the bottom of the ocean

• It is released into the atmosphere

Anika, Elijah, and Henry are exploring a forest when they notice that rain is dissolving minerals from rocks. What is this process called?

• Weathering

• Run-off

• Decomposition

• Combustion

During a science quiz, Daniel, Mason, and Anika were asked: 'What is the main gas dissolved in seawater?'

• Nitrogen

• Oxygen

• Carbon dioxide

• Hydrogen

During a class discussion, Luna, Oliver, and Maya were talking about the ocean. They were curious to know where carbon is stored in the ocean for thousands of years. Can you help them?

• Atmosphere

• Deep ocean

• Surface ocean

• Sediments

Imagine Samuel, Aiden, and Abigail are on a camping trip. They decide to light a campfire. What process is happening when the carbon in the wood they're using is converted to CO2?

• Photosynthesis

• Respiration

• Burning fossil fuels

• Decay

Grace, Emma, and Aria are having a debate. Grace thinks trees get their mass from water, Emma believes it's from sunlight, and Aria argues it's from atmospheric CO2. Who is correct?

• Grace (Water)

• Emma (Sunlight)

• Aria (Atmospheric CO2)

• None of them