Answer to Question 1
Freezing if not kept heated
Answer to Question 2
Companies with job sites in which fumes, dust, gases, vapors, or other potentially harmful particulates are present should have an air safety program as part of their overall safety and health program. The program should have at least the following elements:
Accurate hazard identification and analysis procedures to determine what types of particulates are present and in what concentration
Standard operating procedures (in writing) for all elements of the air safety program
Respirators that are appropriate in terms of the types of hazards present and that are included in 42 CFR Part 48
Training including fit testing, limitations, use, and maintenance of respirators
Standard procedures for routine procedures and storage respirators
Water-bottle
Claude Monet, Bridge over a Pool of Water Lilies.
Signal transduction mechanisms at chemical synapses.
Ice, liquid water, and water vapor
The structure of liquid water
Summary of Chemical Digestion