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Muscle, hair color, height are the 3 most common physical traits affected by the environment.
Answer:
capillaries help the blood containing the things a cell needs
Explanation:
Answer:
While skeletal muscles are arranged in regular, parallel bundles, cardiac muscle connects at branching, irregular angles, called intercalated discs. Striated muscle contracts and relaxes in short, intense bursts, whereas smooth muscle sustains longer or even near-permanent contractions.
