D: oxygen
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What are two female parts of a flower?
Which outcomes might farmers want to achieve by using artificial selection?
Which statement is always true of dominant alleles?
Which sequence shows the shortest route taken by blood travelling from a leg to an arm in the human body?
Anaerobic respiration in yeast can be summarised as follows. glucose → ethanol + carbon dioxide How many molecules of…
What happens to the volume of the thorax and the air pressure in the lungs during breathing out?