Well, it's obvious, because without a transport system, cells wouldn't have the nutrients and things they needed!! And waste wouldn't be able to circulate out of cells.
Answer: A
Explanation:
it’s a hands free device that prevents water being wasted
This skin is known as the body membrane
Answer:
So one partner has genotype: Aa or AA while the other without dimples has: aa
There can be children with dimples only if the first partner with dimples has as genotype Aa.
