The classic case of ionic bonding, the sodium chloride molecule forms by the ionization of sodium and chlorine atoms and the attraction of the resulting ions. An atom of sodium has one 3s electron outside a closed shell, and it takes only 5.14 electron volts of energy to remove that electron.
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Coral reefs are formed from coral polyps. When the polyps release calcium, a free swimming coral larvae is formed and which attack themselves to attached rocks.
Answer:
the composition of a population gene can change over time through evolution
Explanation:
Nature selects
Fungi because they can break down any dead orginisms and be eaten by other orginisms.
ANSWER:
Index Fossils can be used to identify a specific period of time