Is a solid because liquids are not is not that close and gas is very far apart.
The central vacuole stores materials, wastes, and helps give the plant structure and support.
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Answer:
Lichens can be used as air pollution indicators, especially of the concentration of sulphur dioxide in the atmosphere. Lichens are organisms that grow in exposed places such as rocks or tree bark. They need to be very efficient at absorbing water and nutrients to grow there.
1) same amount of carbon atoms.
That is why it is still called butane and butene.
but- always signifies 4 carbons
