a vacuum pump should be connected - as far away from the pump as possible

a high capacity vacuum pump and short, large diameter hoses will - dramatically reduce emissions,

pressure drop, and evacuation/dehydration time

ozone contains three - oxygen atoms

one chlorine atom can destroy - 100,000 ozone molecules

CFC's do not dissolve in water and do not breakdown into other compounds that dissolve in water -

CFC's cannot be washed out of the lower atmosphere

ODP - ozone depletion potential...
Pearson Edexcel International GCSE (9–1) 4BI1/1BR 4SD0/1BR Biology UNIT: 4BI1 Science (Double Award) 4SD0 PAPER: 1BR QP + MS JUNE 2024
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