True. Annelids are true coelomates, as they have a muscular system lining their body cavity.
1. natural selection acts on existing traits because you can not evolve into something you didn't have
2. original structures evolve to accomplish new function in order to survive
Things of the same species have similar morphology and can INTERBREED
Answer:
All organic molecules are made up of carbon compounds so we can say that the main atom or molecule is carbon.
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