1. Individual: any living being.
2. Population: same group of species that live in a paricular geographical area.
3. Community: a group of interdependent organisms of different species growing or living together in a specified habitat
4. Ecosystem: a community of living organisms called producers, consumers, and decomposers.
5. Biosphere: region of the surface, atmosphere, and hydropsphere of the earth occupied by living organisms.
The sun makes the earth warm
The answer is nucleic acid. Every nucleic acid is composed by a base, a sugar and a phosphate group. And they can form DNA or RNA by combining together.
A string of amino acids attached together is called a <u>Polypeptide Chain(S)</u>
