2 The pedigree shows the pattern of inheritance for a sex-linked trait. If
couple C-D have another son, what is the probability that he will show this
sex-linked trait? How do you know?

The answer is 323 g.

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.

It would be true sodium reacts with water in a violent way 

Polyethylene is a strong synthetic polymer that can be used to make toys and bottles. polyethylene is a plastic material called thermoplastic. one very useful property of thermoplastic is that when it is heated it turns into liquid, which can be molded into desired shape and size. also the material do not dissolve at room temperature.