Astudent researching bacteria concluded a report with the claim below:
all bacteria disrupt the health of organisms they inhabit, including humans.
which statement correctly addresses the validity of the claim?
the claim is valid because many studies and experiments have shown that
bacteria disrupt homeostasis.
the claim is invalid because there are many types of bacteria that
organisms maintain homeostasis.
the claim is invalid because only microorganisms such as viruses disrupt
the health of organisms.
the claim is valid because bacteria cause disease.

The correct option is B. The claim is invalid because there are many types of bacteria that help  organisms maintain homeostasis.

Explanation:

Bacteria are often considered to be disease or infection-causing organisms but this is not true. Not all bacteria are harmful, many other bacteria's play essential roles in the maintenance of life on the Earth. The human body is made of many bacteria which help in maintaining the homeostasis of the body. The human body is surrounded by enormous bacteria that are good and they are termed as human's natural microbiota.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

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