Answer:
4 black/polled: 4 black/horned: 4 red/polled: 4 red/horned
Explanation:
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Alkali metals displace Hydrogen from H2O in order to make the Hydroxide ion, the displaced Hydrogen is formed as H2 gas.
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Answer:
The sodium-potassium pump moves potassium
ions into the cell and sodium
ions out of the cell.
Explanation:
The epiglottis - a flap of elastic tissue that projects upwards behind the tongue and hyoid bone. It closes off the larynx during deglutition (swallowing) to prevent aspiration and direct food down the oesophagus rather than the trachea.