Answer:
DNA
Explanation:
DNA is found in the nucleus of a cell.
The human genetic code is made of 50,000 genes.
Organisms store and transmit genetic information.
DNA has a double-helix structure.
Cells contain protein molecules.
Answer: she might be suffering from anorexia nervosa
Explanation: people who suffer from anorexia fear that if they eat more than they feel like is enough that they'll get overwieght, the stopping of her menstruation cycle most likely means she isn't getting the nutrients that she needs to get into her body
One disadvantage of Pre-Columbian civilisations is that they had no animals that could be used to carry things - such as donkeys or horses, so the goods could not be transported as well as in the Old World - those animals simply did not evolve in America or disappeared by that time. People often had to transport the goods they wanted to sell on their backs.
The type of social rule where most people talk quietly when going into a library because is called norm.
<h3>What is social rule?</h3>
Social rules are rules that every member of the society are expected to abide with. These rules are standard rules in which people live by and not enforced by law.
Social rules are essential because certain rules have been shared by the society which must be followed. The social rules are correct and acceptable behaviour in the society
Hence, the type of social rule where most people talk quietly when going into a library because is called norm.
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