Answer: All of the rock in the Earth is recycled and accounted for during the rock cycle. This principle applies to other areas of science as well and is known as conservation of mass, which says that mass cannot be created or destroyed but is cycled between different forms.
Explanation:
Next organ would be "Small Intestine"
So, option C is your answer.
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Answer:
Other variables that could have been taken into account are size, variability of shape in its wings and degree of darkening in its wings.
Explanation:
Of the three named variables, I believe that the degree of darkening is the most important since in this way we can realize the association of its color with environmental pollution, and thus be able to look for a cause-effect relationship.