Give an example of a structure that is present in human embryos but has disappeared by birth
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Ответ:
But the wings of an ostrich have lost their original use. Structures that have lost their use through evolution are called vestigial structures.
Explanation:
Ответ:
24300000K
Explanation:
Q=mc(change in temperature)
900X2.0=1800.0
1800.0X13500= 24300K