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science
In Science we learned about planets.
We learned that there are eight planets .
There are four inner planets. (The rocky planets.)
There are also the four outer planets. (The gaseous planets.)
Pluto used to be a planet but it was to small and was later called a dwarf planet.
We learned about cells in science.
There are two kinds of cells.
The first is an animal cell.
The second one is a plant cell.
There are some organisms that have only one cell, they are called uni-cellular organisms.
We learned about reproduction.
There are two kinds of reproduction.
The first is sexual reproduction.
The second is asexual reproduction.
Both plants and animals can reproduce.
We learned about gravity and mass.
Gravity is the force which pulls down everything.
Mass is what scientists use to tell how heavy something is.
Every planet has gravity.
Everything in the universe has mass.