Lower atmosphere and surface is your answer!!
The color of biohazard symbols has identification in the
medical office in which they identify which hazard is placed on the container
such as;
<span>·
</span>Yellow bags – infectious waste, objects
contacted with body fluids or human body parts
<span>·
</span>Red bags – syringes, IV bottles, tubings and
catheters
<span>·
</span>Black bags – sharp materials and blades
<span>·
</span>Blue bags – glass, medicine and bottles
Greenhouse gases are REALLY bad for the environment and one of the major cause of global warming. Greehouse gases can stay lasting in the air for 20 to 200 years.