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Looking into Earth’s geological history, it is theorized that in the early Triassic era, when the first mammals and dinosaurs appeared, the continents were all joined in a single landmass like a supercontinent. What is the name of this single landmass?

Locations of hot spots remain fixed for a long time.  As plates move across such hot spots, they form chains of volcanoes.  The Hawaiian Islands are an example of such an island chain formed over a hot spot on Pacific Plate.  Volcanoes on the Island of Hawaii are still active.  Moving northwest, the volcanoes are extinct.  The age of the extinct volcano named Koko Guyot, located 4,000 km away from the Hawaiian Islands, is 40 million years old.  What is the rate of movement of the Pacific Plate in cm/year?

What is prime meridian?

What is the primary factor that determines the chemical behavior of an element?

What is the maximum number of electrons that can be in the first shell of an atom?

The periodic table gives the following information about oxygen: A scientific article that you are reading mentions oxygen 18. How is oxygen 18 different from the typical oxygen atom described in the periodic table?

Which is the most basic unit of life?

Which two sugars function as a structural backbone for genetic material?

Your roommate has heartburn, and you give her some antacids. She wants you to explain how the antacids will make her feel better. What do you tell her?

Which of the following BEST describes the primary function of the plasma membrane in a cell?