Radioactive wastes and spent nuclear fuel are to be contained and isolated properly for a long period of time because when properly contained and controlled it pose dangers to the environment and the people with its very high radioactivity. One hazard it may pose to the environment is mutation.
BioSafety Level (BSL) 3 labs,
perform work with indigenous or exotic agents that may cause serious or
potentially lethal diseases through the inhalation exposure. Biological Safety
Levels (BSL) are a sets of protections assigned to the activities that occur in
specific biological laboratories. BSL protects laboratory workers, the
surrounding environment and also the community.
Answer:
first one is pre second ones pes third one is pes fouth one is pre
Explanation:
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