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Marine iguanas experience biggest problem as far as their diet is concerned. this is because 'they feed on sea plant that have high concentration of salts since plants living in this region are poor osmoregulators. in addition, when they are feeding, they may take in water which usually has high salt concentrations. to survive these harsh condition, marine iguana has salt gland located in the nostrils. these glands have several secretory tubules and each of the tubules has an epithelial lining with specialized cells that have the ability to transport salt from the body outside. to perform this function effectively, large amount of energy is required and as a result these cells have high numbers of mitochondria.
Answer: I would say Felsic.
Explanation: There are many other names for Igneous Rocks. Felsic or Silicate. then there's Phaneritic, Aphanitic, Plutonic Rock, Volcanic Rock, Intrusive, Extrusive, and also Porphyry.
Scientists are always learning and trying to discover more things that could possibly help us in the future
