BI-2041
Why life depends on photosynthesis
Biology · Secondary 4 · Hard · Why life depends on photosynthesis
In a temperate forest, the concentration of carbon dioxide in the air is lowest in mid-summer and highest in mid-winter. Which statement best explains this pattern?
- Photosynthesis is highest in winter and lowest in summer.
- Respiration stops in summer but continues in winter.
- Photosynthesis is higher in summer, removing more carbon dioxide from the air.
- There are more fossil fuel power stations operating only in winter.
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