<span>C. nitrogen and hydrogen shoould be your answer
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Answer:
I don't know I'm sorry I will tell you another answer asks me
<span>A dangerous cargo manifest is most commonly
associated with the Water mode of transportation. Anyone who would like to
ships any materials that are hazardous in a vessel must arrange a Dangerous
Cargo Manifest (DCM) or sometimes called the stowage plan for those hazardous materials.</span>
the answer is it has a long half life