A researcher in a lab finds a microscopic organism that is a producer. Populations of this organism are found in extreme environments (e. g., hot springs). The researcher will correctly identify this organism as belonging to the domain .

Archaea

Explanation:

Archaea is domain of living organism consisting of unicellular, prokaryotic organisms that are able to exist in extremely harsh environment such as hydro-thermal vents, hotsprings and acidic environment.

Some archaea are known to posses the capacity to carry out a form of photosynthesis using rhodopsin-like ion pumps to move ions against the gradient and produce ATP via chemiosmosis. However, no known archea has the ability to carry out classical photosynthesis like that of green plants.

i believe it would be the lungs.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !