Answer: A) The 'lub' sound is caused as the atrioventricular valves close.
Explanation:
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Answer:
Explanation: Three atmospheric processes modify the solar radiation passing through our atmosphere destined to the Earth's surface. These processes act on the radiation when it interacts with gases and suspended particles found in the atmosphere.
Answer:
Chromosome 11 is made of over
⇒ 130 million base pairs.
Approximately ⇒ 2000 genes are found on chromosome 11
Hydrogen ion, or H-, creates water when combined with a hydroxide ion, OH+.
The 'formula' for water is H20, two hydrogens and an oxygen.
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