It's important to recognise propaganda because it gives you clues about the objective of people disseminating it.
Answer:
In former President Obama's speech, he puts emphasis on the need for immediate action on environmental impact caused by society, he uses persuasive techniques by mentioning examples of environmental impact such as Fiji villagers being forced from their homes due to rising sea levels and melting glaciers in Alaska. It appears that he tries to appeal to peoples feelings and ethics by using pathos and ethos in his argument.
He also appeals to the audiences logic by using logos for example, his mentioning of uninterrupted job growth. While still being able to increase use of clean energy as opposed to unclean energy. And also providing reassurance that there have been successful cases of increasing use of clean energy. He mentions the Paris agreement and it's change for the better in the environment.
Some themes you might consider in the play include:
Greed
Power and ambition
What it means to be masculine and feminine
Trying to persuade
Idealism
What it means to be a (good/bad) leader
The importance of omens
The difference between villains and heroes
Answer: A psychologist is a professional who practices psychology and studies normal and abnormal mental states, perceptual, cognitive, emotional, and social processes and behavior by experimenting with, observing, interpreting, and recording how individuals relate to one another and to their environments.
Explanation: an expert or specialist in psychology.