<span>When you are pregnant, you do not ovulate because you have already fertilized an egg and it is embedded into the uterus where it is growing into a baby. The body knows this, so it does not shed the uterine lining. The shedding of this lining is triggered by hormones which change when the body is pregnant. During pregnancy, a large amount of progesterone is initially produced which helps to prevent the lining from shedding. If you are not pregnant, your progesterone level will begin to decline at the end of your cycle, triggering the shedding of the lining and the period. Birth control pills alter your hormones to mimic a pregnant state. This will prevent the body from releasing an egg and then shedding the uterine lining.</span>
Answer:
Similar structures but with different functions
Explanation:
Risk arbitrage also called merger arbitrage trading; it refers to an event mediated hypothetical trading method. It tries to produce profits by taking a long position in the stock of a target company, and optionally merging it with a brief position in stock of an attaining company to produce a verge.
Riskless arbitrage includes taking merit of interest rate differentials by involving in a spot transaction today to sell/buy foreign currency, and at the same time involving in a purchase/sale of foreign currency for a particular time in the future.
Prokaryotic cells are simple, ancient cells without a nucleus. Eukaryotic cells are more complex and have a nucleus.
