I'm not sure about the first two but I think the one about the halite crystal is cubic. :)
Answer:
It doesnot have a nucleus to increase the surface area
Explanation:
Red blood cells carry oxygen from our lungs to the rest of our bodies .Then they make the return trip, taking carbon dioxide back to our lungs to be exhaled.
Water! (abiotic)
If water runs out then everything dies! :)
Thanks for the opportunity to answer your question and I hope this help! :)
