1 is false, waves can't propagate in a vacuum.
Answer:
Predict audience reactions to the topic
Explanation:
The other purposes are obvious.
Answer: Level of food deprivation.
Explanation:
The independent and dependent variables are the fundamental components in an experiment. The independent variable is the controlled one that is modified to examine the consequences it has on the dependent variable. The dependent variable is the one being measured through the scientific experiment.
In this example, the level of food deprivation is the independent variable and psychological disturbances are the dependent variable.
<span>The campaign practice of getting out and speaking to a targeted group of people is called canvassing. Canvassing is a common political campaign strategy where campaigns directly reach out to and contact people to convince them to vote for a certain candidate. This is done by giving a canvasser a list of people to contact by calling voters or knocking on their doors. </span>
The Whig party was a party active in the US in the 19th century, which was similar to today's Republican party, and in fact the Republican party was partially created by the members of the Whig party. It's ideology was Liberalism and Protectionims (limiting trade with other countries).