The Amazon Rainforest.
Carbon
Most gas molecules are found in the troposphere, which is the lowest layer of Earth's atmosphere. This is the layer where weather occurs and where most living organisms reside.
Bacteria are generally considered the most numerous organisms on Earth. They are found in virtually every environment and play crucial roles in ecosystems, from aiding in nutrient recycling to influencing human health.
I don't know where they are mainly found but most are found in moist and wet areas and they can also be found in tree trunks or other organisms.
All multicellular organisms have a Mitochondria including plant cells.
Eubacteria are the most common unicellular organisms; they are found everywhere on Earth.
Carbon
Antibiotic designed to kill single-celled prokaryotic organisms found in food by disabling their ability to use oxygen and suffocating them is most likely targeting organisms found in the Eubacteria kingdom.
carbon and water
complex multicellular organisms
Algae
Water is the most abundant molecule found in living organisms. It is essential for life processes such as hydration, temperature regulation, and biochemical reactions.
Small shelled marine organisms are the most common easily observable fossils found in rocks.
Antibiotic designed to kill single-celled prokaryotic organisms found in food by disabling their ability to use oxygen and suffocating them is most likely targeting organisms found in the Eubacteria kingdom.
coastal estuary
Selenium is not a common element but is necessary.
Most gas molecules are found in the troposphere, which is the lowest layer of Earth's atmosphere. This is the layer where weather occurs and where most living organisms reside.