Final answer:
From the excerpt on Redwoods, it is inferred that they need fog for water, and global warming is a threat by reducing fog, not that other factors mentioned caused their endangerment.
Step-by-step explanation:
Based on the passage provided from "Save the Redwoods", it can be inferred that Redwoods require a significant amount of fog for their water source, as global warming poses a threat by reducing this crucial element of their habitat. It would be misleading to claim that the Chinese logged the Redwoods to near extinction, as the passage doesn't directly state this, but instead, indicated their rediscovery in China in 1948. Additionally, the passage does not provide sufficient information to infer that Redwood trees continue to grow taller throughout their lives or that using non-recyclable products will specifically kill Redwood trees. Therefore, the most supported inference is that Redwoods can only thrive in areas that receive abundant fog.