Answer:The characteristics of red blood cells is that they are usually concave in shape, and usually have a fair bit of surface area on them. Immature red blood cells like reticulocytes are more squashed like. The function of red blood cells is to carry oxygen, and/or carbon dioxide to various portions of the body.
Explanation:
Becuase they were fully aquatic unlike tetrapods today
Answer:
yes
Explanation:
because some advantages are avoidable
Answer:
osmosis
Explanation:
The process that was going is <u>osmosis</u>.
<em>Osmosis is the movement of water molecules from regions of high water potential to regions of low water potentials through a selectively permeable membrane.</em>
In this case, the membrane is only permeable to water movement and not ions and water molecules move from the side with pure water (which happens to have higher water potential) to the side with 4% sodium chloride until equilibrium in water potential is established between the two sides.
