<span>A squirrel and an oak tree are both examples of individual organisms</span>
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They use Geothermal Energy, which is used from plants to generate electricity.
Answer:
D. Discovered chemolithotrophs in natural enviroments.
Explanation:
Sergei Winogradsky was a russian microbiologist. He observed in his research with genus of bacteria <em>Beggiatoa, </em>they were able to oxidize hydrogen sulfide as an energy source. Being the first example known of lithotrophs (organisms that use inorganic substrate in order to obtain energy).
I'm not sure, but it could possibly be diabetes
Microscope to focus on a specimen identify one safety issue to consider
