The cornea is the only part of the eye that touches air.
B. Mitochondrion. Centriole is unique to animal cells and is used in cell division. Chloroplast and Cell wall are unique to plants cells, together with permanent vacuole. Both have mitochondrion, where energy is released through respiration.
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Air pressure would be considered to calculate wind and chill factor. Also air temperature would be considered one to.
