Answer:
Homeland Security Presidential Directives help in food emergencies
Explanation:
Answer: the first one
Explanation: the rest are very wasteful :)
If a test tube has been used, and its contents is supposed to be disposed, carefully pour the contents to the lavatory with a confirmation of a professional (as it may damage the pipelines of the sink) and ensure that there are no splashes created that can contact the human skin. Wash the test tube thoroughly and let dry.
This means having no charge