Take picture of the moon and pic a new model
Answer: A) The 'lub' sound is caused as the atrioventricular valves close.
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Answer:
Gametes are an organism's reproductive cells. They are also referred to as sex cells. Female gametes are called ova or egg cells, and male gametes are called sperm. Gametes are haploid cells, and each cell carries only one copy of each chromosome. ... In contrast, each egg cell, or ovum, is relatively large and non-motile.
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Explanation:
C. hemoglobin hope this helps
