Questions 1. Where does the overwhelming amount of seismic activity occur on the Earth's surface?
2. Explain why the term recycling is an excellent description of plate tectonics.
3. Explain how tectonic plate movement could create another supercontinent like Pangaea.
4. If the Earth's core provides the heat that drives plate tectonics, then what will eventually happen
as the Earth's core cools down over billions of years?
5. What are the various ways in which lithospheric plates interact with each other as they move
around on a dynamic Earth?

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

The double bond between a carbon atom and two oxygen atoms (a molecule of carbon dioxide) has two characteristics. what are they? a.an ionic bond is formed between the oxygen and carbon atoms. b.four valence electrons are shared. c.two valence electrons are shared. d.valence electrons are shared between oxygen atoms.

What is a difference between systemic and pulmonary circulation? a. systemic circulation carries oxygenated blood to the lungs and pulmonary circulation carries deoxygenated blood to the body. b. systemic circulation carries deoxygenated blood to the lungs and pulmonary circulation carries oxygenated blood to the body. c. systemic circulation carries deoxygenated blood to the body and pulmonary circulation carries oxygenated blood to the lungs. d. systemic circulation carries oxygenated blood to the body and pulmonary circulation carries deoxygenated blood to the lungs.