Answer d is the right answer
Answer:
The correct answer is "17,100 years".
Explanation:
Carbon-14 is a radioactive isotope of carbon that is normally present in all living organisms and due to its low content and slow pace of degradation it is widely used for dating purposes. The half-life of Carbon-14 is approximately 5,700 years, therefore, a wood that had gone through 3 half-lives of Carbon-14 will be approximately 17,100 years old. This calculation is made simply by multiplying three times the half-life of Carbon-14.
Answer:
D
Explanation:
Because the respatory system Circulates oxygen into the body and blood needs oxygen And the And the circulatory system circulates all the blood in your body Circulatory system circulates all the blood in your body in the works together with the respiratory system.
The biochemical processes in the order in which they occur during the menstrual cycle.
- FSH and LH stimulate the follicles to develop and the oocyte to produce estrogen.
- Rising estrogen levels suppress FSH production and the development of other follicles.
- Elevated levels of progesterone maintain the endometrial lining of the uterus.
- An LH surge causes the follicle to rupture.
- The breakdown of the corpus luteum causes progesterone levels to drop.
- The endometrial lining breaks down and low estrogen levels stimulate the pituitary gland to release FSH and LH.
<h3>How is the menstrual cycle regulated?</h3>
The menstrual cycle is regulated by the complex interaction of hormones: luteinizing hormone, follicle-stimulating hormone, and the female hormones estrogen and progesterone.
With this information, we can conclude that progesterone is a hormone that is responsible for regulating a woman's menstrual cycle, preparing the uterus to receive the fertilized egg and preventing it from being expelled by the body.
Learn more about menstrual cycle in brainly.com/question/27471285
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