During the first phase of the menstrual cycle which is called the follicular phase, estrogen hormone will gradually increase causing the uterus lining to thicken. This thickening of uterine lining is preparation for possible implantation of embryo if fertilized egg travels safety to the uterus.
Answer:
CARBON IV OXIDE and WATER
Explanation:
When in the presence of oxygen, cells undergoes aerobic respiration which involves the breakdown of glucose into energy, water and carbon iv oxide. The carbon iv oxide and water are formed during citric acid cycle of respiration. The energy are absorbed and stored leaving water and carbon iv oxide. Carbon iv oxide is removed from the cells by diffusion into the bloodstream and removed by the lungs, converted into hydrocarnonate ions. Water is removed by diffusion from where it is removed by the kidneys as urine.
Answer:
2 electrons
Explanation:
According to the octet rule, atoms must bond to each other, sharing electrons among themselves in an attempt to complete their valence shell (last layer of the electrosphere). In other words, an atom becomes stable when it has 8 electrons in its valence shell.
Oxygen atoms have six electrons in their valence shell, so to achieve the stability suggested by the octet rule (eight electrons), these atoms share two electrons, forming one oxygen gas (O₂) molecule.
Answer:
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