Http://study.com/academy/lesson/positive-negative-feedback-in-biological-systems.html
Here's a link :)
light colored frogs becasue they can't survive in this muddy and pulloted pond
<span>sotonic Solution. Isotonic-no water movement across the cell membrane since the concentration of ions are farily equal in and out of the cell. Hypertonic-a condition where cell loose it water content and ultimately plasmolyze due to the higher ionic concentration outside the cell than inside.
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The greater amount of eumelanin in darker skin protects folate from being broken down by UV radiation and thus increases fitness among populations in high-intensity UV areas. ... However, it does not explain why there is variation in human skin color.
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. ... Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
Explanation:
