An atom of hydrogen consists of one surrounded by one

An atom of hydrogen consists of one proton surrounded by one electron.

Explanation:

Hydrogen is the first element of the periodic table, and its atom is the simplest atom of the universe. It has an atomic number of 1, which means it has 1 proton in the nucleus, and it has one electron surrounding this nucleus. Hydrogen also has some isotopes which contain neutrons in the nucleus (such as the deuterium, whose nucleus is made of 1 proton and 1 neutron, with still 1 electron surrounding it).

bacteria that live on the ocean floor are sustained by phytoplankton. phytoplankton, microscopic marine photosynthetic organisms, have a vastly significant role to play not only in the marine food web of which they’re part of, but also on a more global scale. despite their infinitely small size in comparison to other marine organisms, these tiny creatures occupy an immensely important ecological niche: they are the foundation of the marine food web, and as primary producers, play key roles in supporting all other organisms in the marine environment, as well as in the regulation of the earth’s climate through the sequestration of carbon, oxygen production, and other related processes. phytoplankton account for roughly half of all global primary productivity; therefore, their significance extends far beyond the marine environment alone. there is an intriguing sense of irony in the realization that these tiny living beings that often live out their existence unnoticed and undetected by the rest of the world, have such a far-reaching impact on the lives of virtually all other living organisms on the planet, particularly on those in the marine environment. the world that we have become accustomed to has been and is continuously shaped by the workings of these miniscule yet vital “plants of the sea”.

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