I think it is the cell membrane, but there is a possibility it is the cell wall. I think the cell membrane is correct because the skin does allow certain things into your skin cells, such as water. Similarly, cell membranes allow certain things in the cell. The cell membrane basically acts as the security guard of the cell.
Giovanni di Bicci de' Medici had a son name cosimo who was the richest man in florence and he was very interested in politics and spent large sums of his wealth in to reshape florence politiccs and was nicknamed father of his country. this obsession with politics grew until the most powerfull and wealthy medici lorenzo the magnificent who spent so much time and money on politics that their bank started to decay.
Answer:
Demand in relation to price
Explanation:
Demand curves show, quite simply, demand as it relates to the price of a product. So, one can see with a demand curve how demand would be affected by a change in price for a product.
The main method to predict the future for the ancient Chinese were the Oracle bones.
People would write something on animal bones and then throw it into the fire. They would then interpret the future based on how the bone cracked in the fire.