Use what you have learned about the stages and monitoring of volcanic activity to choose the correct answer from the drop-down menus. A volcano that will never erupt again is . Mount Aetna on Sicily is a(n) volcano because it produces earthquakes and lava flows. This volcano is , having no activity since its last eruption in 1707.

Which of the following must happen in order for productivity to increase? a. production levels remain unchanged while inputs increase. b. production levels rise while inputs decrease. c. production levels fall while inputs increase.

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

Aplan that covers all qualified higer education expenses is known as a