The word debris means

The word molten means ________________.

The outer layer of Earth is called ______________.

The crust that makes up the ocean floor is called the __________________.

The hot center of the earth is the

An opening in earth that lets out gases and other materials is a ____________.

An organism that survives in extreme environments is called an ________________________.

The first organisms on Earth were called ________________.

The theory of how continents have moved over time is called _____________.

The layer of earth's atmosphere where people live is called the _____________.

The highest layer of Earth's atmosphere is the ______________.

The layer of earth that protects us from the suns UV rays is called the ____________

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