Answer:
above fossils and fossil fuels is 6
above the sheep is 4
above the tree on the right is 1
above the tree on the left is 3
above the city is 5
Explanation:
brainliestttt
Answer:
<u>Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.</u>
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True) Blood pressure does affect the blood flow through the circulatory system. Blood pressure is the pressure of circulating blood on the walls of blood vessels.
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The most important compound in living beings includes nucleic acid, carbohydrates, proteins and lipids