1 copy of each title/reading level, 36 books total.
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of energy are nonrenewable... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of energy are nonrenewable. T... more
Energy use is one of the key issues of our time. People have traditionally relied on fossil fuels, including oil, coal, and natural gas. There are growing concerns, though, about the pollution caused by these energy resources. In addition, these sources of energy are nonrenewable... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health care, and safer homes. ... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health care, and safer homes. Sta... more
Standards of living vary from country to country, and from one community to another. In general, a family in a developed country lives more comfortably than a family in a less developed country. People have more to ear, access to education, better health care, and safer homes. ... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countries to more developed cou... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countries to more developed countr... more
From the beginning of human history, people have moved from one place to another. They seek better jobs and schools and leave behind unstable political conditions and limited opportunities. These factors often cause people to immigrate from less developed countries to more developed cou... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous impact on people's health.... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in lakes, streams, and ocean... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous impact on people's health. He... more
Health is not just about a person's diet, fitness, and genes. Life expectancy, or how long people are likely to live, is also a reflection of the society in which people live. A society's culture, politics, economy, and access to health care all have a tremendous impact on people's health.... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declining. The trend is a chall... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declining. The trend is a challeng... more
For plants and animals, every place on Earth is a home, or habitat, which provides food, water, and shelter. Yet scientists are finding that habitats for many animals and plants around the world are shrinking. As a result, their populations are declining. The trend is a chall... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population growth. In addition, ... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population growth. In addition, it ... more
The world's population has risen to more than 7 billion people, making issues such as food supply, energy resources, and water quality even more serious. Population Growth examines this major issue in ways that emphasize the causes and effects of population growth. In addition, ... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted and the impact that pol... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted and the impact that pollut... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in lakes, streams, and oceans a... more
Pollution is a growing problem around the globe. Using chemicals, old appliances, exhaust fumes, and plastics are just a few of the things that cause pollution on our planet. Pollution examines how water, soil, and the atmosphere have become increasingly polluted and the impact that pol... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of the natural cycle of c... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of the natural cycle of chan... more
According to most scientists, Earth's atmosphere has warmed by about 1.4 degrees Fahrenheit in the past 100 years. The result has been melting glaciers, rising sea levels, and more extreme weather events. Some people say that current climate change is part of the natural cycle of c... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. In several societies aro... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. In several societies around... more
At the center of many conflicts around the world are human rights, making this one of the key issues in the world today. These rights include the freedom to vote, to assemble, to speak one's mind, to be treated fairly before the law, and to gain an education. In several societies aro... more
Water is an essential resource for life on Earth. Considering how vital and precious water is, it is almost unbelievable that it can be used so carelessly. Sewage, toxic chemicals, fertilizers, pesticides, oil, metals, and solid trash pollute the water in lakes, streams, and ocean... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor countries and allows busin... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor countries and allows business... more
Globalization connects governments, cultures, and economies, making it easier for people to make, sell, and buy goods worldwide. It brings different people more easily into contact, but it can also disrupt traditional cultures. It helps create jobs in poor countries and allows busin... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To address these issues, many... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To address these issues, many ai... more
Food Supply examines the challenges of feeding a world that is home to more than 7 billion people. Every day, nearly 1 billion people go hungry. The causes of food shortages include crop failure, soil depletion, flood, drought, and poor food distribution. To address these issues, many... more