Question

parts of the body by
Q.2. What criteria do we use to decide whether something is alive?
Ans. Usually
, any visible movement, such as walking and breathing, is used to decide whether something is alive or not. There
are also certain movements that occur at the molecular level at a very small scale in an organism. These movements are
not visible to the naked eyes. These invisible molecular movements are; however, necessary for life. For example, the
movement of molecules during metabolic reactions, flow of blood in blood vessels, etc. In addition, other criteria used
to decide whether an organism is alive or not are life processes, such as nutrition, respiration, transportation, excretion,
and reproduction​

Answer 1

Answer:

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Answer 2

Answer:

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