Pregnancy is declared from the appearance of beta HCG hormone in the woman's urine or blood.
The hormone HCG (Gonadotropic Chorionic Hormone) is secreted by the placenta from the implantation of the embryo into the uterus. If there has been fertilization, the HCG rate exceeds 8 IU at implantation and then starts to double every other day.
So we can conclude that pregnancy is described at the stage of implantation.
Answer:
The correct answer will be option Since 2000, more people are living with HIV, but fewer people are dying from AIDS.
Explanation:
The graph shows the increase in the number of people living with HIV from the year 1990 to 2008.
The graph indicated that the number of death due to AIDS rises till 2002 which became constant till 2006 but decreased after it in the year 2007 and 2008. This shows that after 2000 the life span of HIV patients has increased due to which the number of living HIV patients has increased.
Also, the number of people who got affected by HIV has significantly decreased due to the advancement in the medicines which lead to an increase in the number of living HIV patients.
Thus, the option which shows an increase in the number of living HIV patients and decreases in the number of died patients will be the correct answer.
B. An always open channel
Explanation: this would allow sodium inside the cell at all times, which would be bad!