Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Since the beginning of (1) __________________ , the role of doctors and nurses has been to save lives. Arguably, few have (2) __________________ save more people than Ignaz Semmelweiss, who was a (3) __________________ of the idea that doctors should wash their hands before touching a patient. In 1846, Semmelweiss began helping women who were having a baby at a clinic in Vienna. Semmelweiss noticed that many of the patients at the clinic died after they had their baby. He (4) __________________ statistics, and saw that over fifteen percent of women died. The standard practice (5) __________________ at that time was for doctors to examine one patient or body after another without washing their hands. Semmelweiss came up with the idea that doctors' dirty hands could (6) __________________diseases from one patient to another, though at the time he did not know why or how this could happen. He came up with a simple but effective (7)__________________ to reduce the death rate: He advised doctors to wash their hands carefully before touching each patient. At first, other doctors were unsure about Semmelweiss' suggestion. However, this simple solution reduced the number of deaths significantly, and it soon became (8) __________________ practice for doctors to wash their hands before and after seeing each patient.

Some of the most important medical ________________________ of the twentieth century include the discovery of antibiotics and the development of a vaccine for polio.

Organ transplant surgeries are not always successful - there are cases where a patient's body________________________ an organ after the surgery

Pharmaceutical companies that make medicines regularly send people on trips to remote places in order to________________________ new plants that may have health benefits.

Endangered animals such as the black rhino need to be protected in order to ensure the________________________ of the species.

Many developed countries are experiencing a(n) ________________________ in birth rates, as more and more people choose to have fewer children.