Rainforests
Why are rainforests called the lungs of Earth?
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Foundation of Rainforest Ecology
1. What primary process allows rainforest plants to create fuel while releasing oxygen?
- A. Cellular respiration
- B. Photosynthesis
- C. Carbon sequestration
- D. Nutrient cycling
2. Why is the 'lungs of the Earth' nickname considered scientifically tricky?
- A. Because trees actually release more carbon than oxygen
- B. Because trees in mature forests consume almost as much oxygen as they produce
- C. Because rainforests inhale and exhale exactly like a human
- D. Because rainforests do not have any impact on the atmosphere
3. What is the primary reason tropical rainforests grow around the equator?
- A. The soil is much richer there
- B. There are no animals to eat the plants
- C. The sun hits this area directly, providing constant heat and rain
- D. There is no wind to knock down the trees
4. What term refers to the process of a plant capturing and storing carbon in its branches and roots?
- A. Biodiversity
- B. Transpiration
- C. Carbon sequestration
- D. Evaporation
Deep Analysis of Rainforest Systems
1. Why is high biodiversity essential for the health of a rainforest?
- A. It makes the forest look more beautiful for tourists
- B. It ensures the forest is resilient and can survive if one species gets sick
- C. It allows the trees to grow taller than in other environments
- D. It helps the forest floor remain completely dry
2. How do Southeast Asian peat forests differ from many other rainforests?
- A. They have no trees at all
- B. They store more carbon in the waterlogged soil than in the trees themselves
- C. They only grow during the winter months
- D. They do not rely on sunlight for energy
3. Why are great apes in the Congo Basin important to the forest's ability to store carbon?
- A. They protect the trees from being cut down by humans
- B. They filter carbon out of the air while they breathe
- C. They eat fruit and disperse seeds, helping grow new carbon-storing trees
- D. They consume the decaying matter on the forest floor
4. What is the significance of calling the rainforest a 'closed-loop' nutrient system?
- A. Nutrients are washed away into the ocean
- B. The forest imports nutrients from other parts of the world
- C. Decaying matter is recycled quickly back into the living trees rather than the soil
- D. Only humans provide the nutrients necessary for the forest to grow
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