Alfred Wegener's theory about Earth's past included a supercontinent made up of all the continents put together. What was the name of the supercontinent?

Pangaea

Americas

Gondwanaland

Laurasia

What are the most explosive events that occur on the sun? umbras solar flares solar winds prominences

During which phase does earth see more than half of the moon's surface? 1)first quarter2)third quarter3)waxing gibbous4)waning crescent

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases