Answer:
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The color of beef is determined by myoglobin because these cells are actually responsible for transporting oxygen-rich molecules to the the tissues of the animal. This characteristic gives it the color that it has and is very abundant in large organisms like cattles.
Answer:
D. All of the above
Explanation:
All of the options are limiting factors so the less supply of each substance the less likely the species would survive and so the less that can mate and produce different offspring
Answer:

- Which statement is a fundamental principle of the cell theory?*

Living organisms are composed of cells.