Sergei winogradsky choose one: a. discovered microbial fermentation. b. developed a pure culturing system using agar. c. identified microbes using biotechnology. d. discovered chemolithotrophs in natural environments.

D. Discovered chemolithotrophs in natural enviroments.

Explanation:

Sergei Winogradsky was a russian microbiologist. He observed in his research with genus of bacteria Beggiatoa, 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).

The correct answer is option D. "discovered chemolithotrophs in natural environments".

Explanation:

Sergei Nikolaievich Winogradsky was a ecological and soil scientist famous for being a pioneer for the definition of the concept of cycle of life. Winogradsky is also known for being the first scientist who discovered chemolithotrophs in natural environments. He made this achievement during his research with Beggiatoa in 1887, reporting that this organism was able to oxidize hydrogen sulfide as an energy source.

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation:

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick