PLZ HELP Why do the people who live in the altiplanos have large chests and lungs?

They work very hard.

There is very little oxygen.

They have a disease.

The sun is too bright.

One of the observations by someone who was present for roosevelt's speech was, "its clarity, logic, and sincerity struck us." quote one example from the text that you would describe as clear, logical, or sincere. explain the language in your chosen quote correctly, and tell why it can be considered clear, logical, or sincere.

What were the short-term and long-term impacts of the american revolution

The system of checks and balances was designed for what purpose? fear of strong state power to keep power out of one branch to appease the southern states to allow the judicial branch to have equal power