1. Text Structure
Practice

2. Problem/Solution Sequential
As Africa's population of wild lions decreases, Tanzania's Ruaha National Park provides an important habitat for the remaining lion population. However, lions and local villagers living around the park often come into conflict: lions kill valuable livestock, and villagers shoot the lions. To address this issue, the Ruaha Carnivore Project has worked closely with villagers. The Project has introduced stronger fences, warning systems, and guard dogs to reduce livestock losses. To further encourage animal conservation, the Project provides education about the importance of protecting lions. Importantly, the Project has also provided benefits, such as local health care and scholarships, to compensate villagers for the dangers they endure. These efforts have paid off, as both the villagers' livestock losses and lion deaths have declined.
Problem/Solution Sequential

3. As Africa's population of wild lions decreases, Tanzania's Ruaha National Park provides an important habitat for the remaining lion population. However, lions and local villagers living around the park often come into conflict: lions kill valuable livestock, and villagers shoot the lions. To address this issue, the Ruaha Carnivore Project has worked closely with villagers. The Project has introduced stronger fences, warning systems, and guard dogs to reduce livestock losses. To further encourage animal conservation, the Project provides education about the importance of protecting lions. Importantly, the Project has also provided benefits, such as local health care and scholarships, to compensate villagers for the dangers they endure. These efforts have paid off, as both the villagers' livestock losses and lion deaths have declined.
Problem/Solution

4. Compare/Contrast Sequential
The United States Environmental Protection Agency (EPA) regulates air pollution, including particulate matter, the tiny particles floating in the air. There are two categories of regulated particle pollution. Particles less than 10 micrometers but more than 2.5 micrometers in diameter are "inhalable coarse particles," whereas particles smaller than 2.5 micrometers are designated "fine particles." (A micrometer is one-millionth of a meter.) Both these types of regulated particles can travel into people's airways and affect the heart and lungs, with potentially serious health impacts. Inhalable coarse particles are found near roadways and dusty industrial buildings. Fine particles, the smaller ones, are found in smoke as well as in the byproducts of some industrial processes. These particles are the main cause of the reduced visibility, or haze, in parts of the United States.
Compare/Contrast Sequential

5. The United States Environmental Protection Agency (EPA) regulates air pollution, including particulate matter, the tiny particles floating in the air. There are two categories of regulated particle pollution. Particles less than 10 micrometers but more than 2.5 micrometers in diameter are "inhalable coarse particles," whereas particles smaller than 2.5 micrometers are designated "fine particles." (A micrometer is one-millionth of a meter.) Both these types of regulated particles can travel into people's airways and affect the heart and lungs, with potentially serious health impacts. Inhalable coarse particles are found near roadways and dusty industrial buildings. Fine particles, the smaller ones, are found in smoke as well as in the byproducts of some industrial processes. These particles are the main cause of the reduced visibility, or haze, in parts of the United States.
Compare/Contrast

6. Compare/Contrast Problem/Solution
In July 2014, when Africa was experiencing a devastating outbreak of the deadly Ebola virus, doctors identified the first Ebola case in Nigeria. Officials worried that Ebola would quickly spread in Nigeria, but within three months, health officials had defeated the disease inside Nigeria's borders. Because Ebola spreads through direct contact with an infected person, Nigerian medical personnel immediately tracked down everyone who had been in contact with the infected patient. More than one hundred and fifty workers conducted 18,500 interviews to identify everyone who might have been exposed to Ebola. The medical personnel monitored these contacts, isolating and treating anyone who showed signs of the disease. These tactics succeeded, and Nigeria was declared free of Ebola in October.
Compare/Contrast Problem/Solution

7. In July 2014, when Africa was experiencing a devastating outbreak of the deadly Ebola virus, doctors identified the first Ebola case in Nigeria. Officials worried that Ebola would quickly spread in Nigeria, but within three months, health officials had defeated the disease inside Nigeria's borders. Because Ebola spreads through direct contact with an infected person, Nigerian medical personnel immediately tracked down everyone who had been in contact with the infected patient. More than one hundred and fifty workers conducted 18,500 interviews to identify everyone who might have been exposed to Ebola. The medical personnel monitored these contacts, isolating and treating anyone who showed signs of the disease. These tactics succeeded, and Nigeria was declared free of Ebola in October.
Problem/Solution

8. Compare/Contrast Problem/Solution
When the Apollo 13 mission took off, its goal was to land on the moon. However, before it reached the moon, an onboard oxygen tank exploded, damaging the spacecraft and reducing its power. The astronauts faced a life-threatening situation. NASA quickly developed an emergency plan. The three astronauts climbed into the lunar landing module onboard the spacecraft. Though initially intended to keep two men alive while landing on the moon, the lunar module would now help all three return home. The astronauts rerouted their ship to slingshot around the moon, using the moon's gravity to propel them back to Earth. They survived to land safely back in the ocean.
Compare/Contrast Problem/Solution

9. When the Apollo 13 mission took off, its goal was to land on the moon
When the Apollo 13 mission took off, its goal was to land on the moon. However, before it reached the moon, an onboard oxygen tank exploded, damaging the spacecraft and reducing its power. The astronauts faced a life-threatening situation. NASA quickly developed an emergency plan. The three astronauts climbed into the lunar landing module onboard the spacecraft. Though initially intended to keep two men alive while landing on the moon, the lunar module would now help all three return home. The astronauts rerouted their ship to slingshot around the moon, using the moon's gravity to propel them back to Earth. They survived to land safely back in the ocean.
Problem/Solution