Breathing, and lungs. They are the most important.
I would say A...just because when it comes to flexibility everyone is different.
Hope this helps!!!
Answer:
have inadequate production of the enzyme lactase
Answer:
Open burning.
Dumping into the sea.
Sanitary Landfills.
Incineration.
Composting.
Ploughing in fields.
Hog feeding.
Grinding and discharging into sewers.
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