What type of clouds surround the eye of a hurricane?

What layer of the Earth is right below the crust?

What is the calm center part of a hurricane called?

What is the formal name for climate studies?

On which canal would a traveler find Port Said?

What is the energy released from the sun called?

Approximately what fraction of the Earth's air is made up of oxygen?

What is the name given to a fossil that best defines a rock layer's age?

What does a seismologist study?

What is the height of the sea's surface generally called?

In what modern-day country did the dog called the Rhodesian Ridgeback originate?

What is a sudden collapse and downward motion of ice and rocks down a mountainside?

What is the full name for CFCs?

What scientist purposed the theory of continental drift?

What fuels were formed from the decayed remains of plants and animals?

What is the name of the submerged fringe of a continent?

A phytotoxin is a poison produced from what?

Which age is known as the "Age of Fish"?

What event is caused by radiation hitting the Earth's atmosphere?

What is a plant with no internal system of tube like structures called?

What does Earth do to cause night and day?

What layer in the atmosphere is responsible for filtering out solar radiation?

What ongoing process allows water to be constantly recycled?

What type of rock is coal?

What is a person called who specializes in the physical structure and process of the earth?