Because while you're preagant your have so much presure on it it doesnt have a choice where as weight gain everything grows with it. Think of it this way, if you've ever felt a pregants womans belly its harder than usual. If you touch someones belly that is bigger its more smoshy (I know thats not spelt right)
Only 200 out of 2 000, 000 sperm cells reach the ovum. And only one (in exception to very rare cases of two) sperm cells actually participate in the process of fertilization. In comparison, an average female only produces 400 of egg cells during their lifetime, but the eggs cells are significantly larger than sperm cells.
Stem cells because they are compatible of dividing and renewing themselves after long periods
1 is moving or kinetic energy of course because it is energy in motion.
Doesn’t normally happen until your 40’s or 50’s
