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Is the sentence simple or compound?

There are eight planets in our solar system, but there is only one Sun.

• simple

• compound

Is the sentence simple or compound?

The Sun is a star, and a star is a giant ball of burning gases.

• simple

• compound

Is the sentence simple or compound?

A moon is a satellite that moves around a planet.

• simple

• compound

Is the sentence simple or compound?

Earth has only one moon, but the planet Mars has two moons.

• simple

• compound

Is the sentence simple or compound?

"The word orbit means "to travel around something."

• simple

• compound

Is the underline part written correctly? If not, which way should it be written?

The sun is a star, but It is not the biggest star.

• a star, but it is not

• a star but, it is not

• correct

Is the underline part written correctly? If not, which way should it be written?

Some stars are bigger than the sun and, some stars are smaller.

• the sun and some stars

• the sun, and some stars

• correct

Is the underline part written correctly? If not, which way should it be written?

Other stars seem smaller than the sun, they are just farther away.

• the sun, but they are

• the sun, They are

• correct

Is the underline part written correctly? If not, which way should it be written?

Do hot stars give off blue light or do they give off red light?

• blue light or, do they

• blue light, or do they

• correct

Is the underline part written correctly? If not, which way should it be written?

Our sun is not the hottest star, but it is not the coolest star either.

• hottest star but it

• hottest star but, it

• correct