This is true. Scientists cannot agree on one definition of life so far. Therefore, this is true.
The answer is b.
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People with central body obesity are more likely to develop iron-deficiency anemia than people who do not have excess fat in the mid section of their bodies.
Hope it helped you.
-Charlie
The answer is C. Amount of water because a constant variable is a variable that stays the same and the amount of water is constant throughout the experiment