Answer: The biological definition of Archaea is any of the unicellular microorganisms that is genetically distinct from bacteria and eukaryotes, and often inhabiting extreme environmental conditions.
Explanation:
<span>Invertebrates means having no backbone.</span>
The brain sends a message to get rid of the waste? sorry if wrong
They are made from igneous, metamorphic and sedimentary rock.
The cause of mutations in gene expressions are the changes of gene instructions that causes your protein to malfunction. The effect of mutations are the genes not being able to function properly and send the wrong codes/info to your cells.