Question

question 8 (multiple choice worth 1 points)
tg.02which of these statements best describes a similarity between weathering and combustion?

• both increase the level of carbon in the biosphere.
• both reduce the level of carbon in the biosphere.
• both transfer carbon from the atmosphere to the geosphere.
• both transfer carbon from the geosphere to the atmosphere.

question 9 (multiple choice worth 1 points)
tg.04the big island of hawaii was formed by

• convergent boundary volcanism
• hot spot volcanism
• river erosion
• wind erosion

Explanation:

Question 8

• Weathering (e.g., chemical weathering of carbonate rocks) and combustion (e.g., burning fossil fuels) both release carbon from the geosphere (rocks, fossil fuels) to the atmosphere.
• Option 1: Weathering doesn't always increase biosphere carbon.
• Option 2: Combustion increases atmospheric carbon, so it doesn't reduce biosphere carbon.
• Option 3: They transfer from geosphere to atmosphere, not vice versa.
• Option 4 matches the carbon transfer direction.

• The Big Island of Hawaii is formed by hot spot volcanism, where a mantle plume creates volcanic activity as the Pacific plate moves over it.
• Convergent boundary volcanism is at plate boundaries (e.g., subduction zones), not Hawaii.
• River and wind erosion form landforms like valleys or dunes, not volcanic islands.
• So hot spot volcanism is correct.

Answer:

D. Both transfer carbon from the geosphere to the atmosphere.

Question 9