What is produced from pyruvic acid when o2 levels are low
a. acetyl coenzyme a
b. atp
c. glucose-6-phosphate
d. lactic acid
e. pyruvic acid

pyruvic acid converts into lactic acid when there is a lack of oxygen

not too sure maybe olecranon process

air, water, heat and noise pollution can all be caused by producing and using technology. consuming resources - non-renewable resources, including precious metals like gold, are used to make technology