water and oxygen
spongins and spicules give the sponge support:)
Key ideas and support
Oxygen and energy
The desert and tundra.
It provides shape & gives mechanical support. Also serves as a monorail to transport substances around the cell.
two
two or more subsantes (a mixture of substances) !
Two is more stronger themselves
earth is the only planet in the solar system. there might be another planet thats in the solar system tht can support life.
when two substances react a chemical change occurs
Two or more substances that are not chemically combined make up a mixture.
one the moon doesn't have enough gravity for life and two the moon doesn't have water and food on it for life.