Answer:
Either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
Answer:
There is a higher oxygen content in the air of the lungs than that of oxygen-depleted blood and a lower carbon dioxide concentration. This gradient of concentration causes gas exchange during respiration.
Explanation:
Paleontology is the study of the history of life on earth as based on fossils.
Answer:
a = 20 m/s^2
Explanation:
F = m*a --> a = F/m = 320/16 = 20 m/s^2
<span>It is through whistles that dolphins interact with the pod. Each dolphin has a distinct whistle that identifies it with other dolphins of its pod. If an individual is in danger, it uses a particular noise that indicates aid is needed, so the pod responds quickly.
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Small dolphin species gather into multi-member pods as a way to compensate for their size when facing predators.</span>
