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Ocean high tides occur on the far side of Earth because the moon pulls more on the land of Earth than on the ocean.
Carbon Dioxide
A colorless, odorless gas produced by burning carbon-containing materials and by respiration. It is absorbed by plants in photosynthesis.
Purkinje Fibers
Cardiac fibers located in the lateral walls of the ventricles.
Myocardium
The muscular tissue of the heart that contracts to pump blood out of the heart and then relaxes as the heart refills with returning blood.
Endocardium
The innermost layer of the heart's walls, lining the chambers and heart valves.
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