Billions of years ago, how did earth come to have an oxygen-rich
atmosphere?
a. volcanic outgassing
b. comet impacts
c. algae activity
d. earth's cooling
e previous

Which of the following could affect the human population? a hurricane makes landfall on an uninhabited island. a deadly virus emerges that can pass from human to human. a civil war breaks out in italy. a solar eclipse occurs.

Match the following: 1. empirical the belief that an idea should be evaluated based on how it works 2. fundamentalism knowledge based on observation and experiment rather than theory 3. obtrusive to intentionally force ideas or intrude on others 4. pragmatism not religious or spiritual in nature 5. secular a religious doctrine that emphasizes a return to rigid principles

Explain how the roles of both working class and middle and upper class women changed during the industrial revolution. how did those changes lead to the women’s rights and suffrage movements?