Define precautionary principle.
If the evidence, even if not fully studied, shows that human health or the environment cannot be harmed, then all precautionary measures should be taken to avoid or reduce the potential harm.
If the evidence, even if not fully studied, shows that human health or the environment can be harmed, then no precautionary measures need to be taken to avoid or reduce the potential harm.
If the evidence, even if not fully studied, shows that human health or the environment cannot be harmed, then no precautionary measures need to be taken to avoid or reduce the potential harm.
If the evidence, even if not fully studied, shows that human health or the environment can be harmed, then all precautionary measures should be taken to avoid or reduce the potential harm.
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