Valid questions will be retained. No reason to delete them.
Egr valve is for emissions it reduces nox so will not be harmful to engine
Its always harmful (to some extent) to inhale smoke.
yes and it hurts alot
the spleen and the lymph nodes
When your question has been removed from the unanswered list that means someone has answered your question.
Harmful organisms in the Lymph are Destroyed in the Lymph Nodes
Question Deleted
there is no cure yet, but if tumors become harmful they can sometimes be removed.
Question Removed
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Water treatment plant