Answer:
B. struggling
Explanation:
News papers are having are having a difficult time selling and advertising
3 I feel like it is I could be wrong
Answer:
You did not include the text so i have multiple definitions that may go with what you are reading about
Definition 1 : prevent or obstruct (an anticipated event or action) by taking action ahead of time.
Definition 2 : act in advance of (someone) in order to prevent them from doing something.
Definition 3 : buy up (goods) in order to profit by an enhanced price.
The 3rd definition goes more with a text about history
The 2nd is just preventing someone from doing something ahead of time //Example : Back to the Future
The 1rst definition is like the 2nd one but with events.
Chromatography is a chemical process through which scientist can separate mixed elements to analyze them individually.
It basically consists in dissolving the mixture in a liquid that separates the different elements as a purification process.
Forensic Scientists use it in different forms while processing samples, for example:
* Planar Chromatography that can identify if two samples are the same.
* HPLC that can detect explosive components and some specific drugs.
* Gas Chromatography can detect the presence of alcohol, drugs or poison in a body prior to its death.
