The surface of some metals, such as iron and copper, corrode when exposed to the air which reduces their electrical conductivity.
Suggest why their conductivity is reduced.

As rust or iron oxide absorbs moisture and becomes a poor conductor, its electrical conductivity decreases.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

i wish i could with all of them i can barley see the first one so here's the answer to the first one b