Given that our solar system is now about 4.6 billion years old, when will we need to start worrying about the sun running out of hydrogen for fusion?

What may have happened or what caused the extinction of Carcharodontosaurus? (Carcharodontosaurus is a dinisour)

The least industrialized regions of Europe are

Find the length of the missing side the triangle is not drawn to scale 17 and 15

What is the relationship between north hemisphere and south hemisphere?

Which properties of minerals can we not accurately rely on because it can amongst the same mineral A) streak B) luster C) color D) crystal structure

Which European nation was the most influential in colonizing Brazil? A. Spain B. France Portugal D. England

What crops grow abundantly in the Central Valley of Chile? A) fruit, vegetables, and wine grapes B) sugar cane, rice, and oranges C) cacao, coffee, and bananas D) corn, wheat, and barley

Sections of active fault lines that haven't experienced a significant earthquake for a long time, even though adjacent sections have, are called a. stress accumulations. b. recurrence gaps. c. seismic risks. d. seismic gaps

What is the Trans-Siberian Railroad? a. the world's longest continuous railroad line b. the major link between Moscow and Europe c. the best way to travel between Russia and Afghanistan d. the shortest railroad in Siberia

What are the 4 different fields of study of Earth's systems?