Which sentence states a fact?
Rainforests supply one out of every four ingredients used in modern medicine.
People rely too heavily on the resources that rainforests provide.

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{a1_name}
It can be proved by looking up where medicines come from.
{a2_name}
Too heavily shows what a person believes, thinks, or feels. Another person might have a different opinion about how much people should rely on these resources.
Try another topic:
Put the sentences in order