Ascientist believes that she has found a new life form. which of the following conditions is not considered essential in determining whether the putative new life form is alive?
a. the creature seems to react to being touched.
b. the creature possesses purposeful anatomical structures that differ from one another.
c. the creature's body is bilaterally symmetrical.
d. it appears to have cells when viewed under a microscope

Answer is C, the creature's body is bilaterally symmetrical.

Explanation:

Note that , when an organism is said to be bilaterally symmetrical, it means that , the right side and the left side of the body plan are just like mirror image of each other, when cut or divided along a plane.

In this case, since the scientist just found a new life form, the type of symmetry possess by the organism is never to be considered essential, because if it were to be considered, it will mean the new organism will be terminated or killed to confirm the symmetry, which has automatically negate the process of determining whether the new life form is alive.

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answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.