Mechanical waves need mediums. or else it isn't a mechanical wave
Answer:
At birth, there are approximately 1 million eggs; and by the time of puberty, only about 300,000 remain. Of these, only 300 to 400 will be ovulated during a woman's reproductive lifetime. Fertility can drop as a woman ages due to decreasing number and quality of the remaining eggs.
Explanation:
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Answer:
The one that's highlighted in blue is the answer
I believe the answer is c
The number of proton is the same as the atomic number;therefore, changing number of proton by decreasing it would change the element completely
