Answer:
O A Single-celled organisms are simple, while multicellular organisms are complex,
I think its O+ but im not sure. Sorry if its correct.
Since the average osmotic pressure of the brain is 300mM and the concentration of the solution is 280mM, that means there is 20mM difference between the brain cells and CSF. This will induce osmosis and cause water to move from the CSF into the brain until the concentration becomes same. Assuming brain volume is 1200ml and the CSF constantly replaced., then the estimation of fluid should be: 20mM/300mM * 1200ml= 80 ml
If it made percent it should be: 80ml / 1200ml= 6.67%
If you mean where lipids come from, we get them from food like butter, oils, avocados, etc.
If you're asking how we absorb lipids, lipids get broken down into fatty acids and glycerol which are absorbed by the lymphatic system through lacteals in the villi of the small intestine.
Hey, there!
Question: Which level of classification contains all the others
Answer: 
(
Option B)
Good luck on your assignment and enjoy your day!
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