A, because a study showing that people tend to perceive GMO labeled foods as bad reinforces the reason given that labels reinforce stigmas about said products.
Answer:
a struggle for existence, variation and inheritance. These are said to be the necessary and sufficient conditions for natural selection to occur.
Explanation:
The jobs of enzymes, structural proteins, hormones, fatty acids and other important molecules continue around the clock, as do the processes of cellular repair, regeneration and reproduction. Your body gets its needed energy from foods, which are all ultimately funneled into cellular "furnaces" called mitochondria, where nutrients are converted
Here's a picture to help explain and show the steps:
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