Pollution Test Study Guide Pollution Test Study Guide Pollution – when a harmful material or substance is added to the environment. Most pollution is caused by humans. Pollution is the result of the burning of various things. Very little pollution is caused by nature like volcanoes and wild fires. There are different types of pollution like air pollution, water pollution, and soil (land) pollution Pollution – when a harmful material or substance is added to the environment. Most pollution is caused by humans. Pollution is the result of the burning of various things. Very little pollution is caused by nature like volcanoes and wild fires. There are different types of pollution like air pollution, water pollution, and soil (land) pollution Atmosphere – the blanket of gasses that surrounds the earth. Atmosphere – the blanket of gasses that surrounds the earth. Chemicals – substances with certain properties like what is put in the air when gasoline and other fossil fuels are burned. Burning is a chemical change that creates something new like smoke, smog, ashes, and harmful toxins. Chemicals – substances with certain properties like what is put in the air when gasoline and other fossil fuels are burned. Burning is a chemical change that creates something new like smoke, smog, ashes, and harmful toxins. Acid rain – precipitation that can harm living things and break down Earth materials. Humans can’t see or feel acid rain but things that are exposed to it for years and years will eventually die or break down. Acid rain – precipitation that can harm living things and break down Earth materials. Humans can’t see or feel acid rain but things that are exposed to it for years and years will eventually die or break down. Conservation – using resources wisely; saving. Humans can conserve soil, water, and energy. Farmers practice conservation by contour plowing, irrigation, and crop rotation. Conservation – using resources wisely; saving. Humans can conserve soil, water, and energy. Farmers practice conservation by contour plowing, irrigation, and crop rotation. Deforestation – The removal of forests. This not only causes living things to lose their homes but it can also cause flooding, landslides, and erosion of the land. Deforestation – The removal of forests. This not only causes living things to lose their homes but it can also cause flooding, landslides, and erosion of the land. Pollution Test Study Guide Pollution Test Study Guide Pollution – when a harmful material or substance is added to the environment. Most pollution is caused by humans. Pollution is the result of the burning of various things. Very little pollution is caused by nature like volcanoes and wild fires. There are different types of pollution like air pollution, water pollution, and soil (land) pollution Pollution – when a harmful material or substance is added to the environment. Most pollution is caused by humans. Pollution is the result of the burning of various things. Very little pollution is caused by nature like volcanoes and wild fires. There are different types of pollution like air pollution, water pollution, and soil (land) pollution Atmosphere – the blanket of gasses that surrounds the earth. Atmosphere – the blanket of gasses that surrounds the earth. Chemicals – substances with certain properties like what is put in the air when gasoline and other fossil fuels are burned. Burning is a chemical change that creates something new like smoke, smog, ashes, and harmful toxins. Chemicals – substances with certain properties like what is put in the air when gasoline and other fossil fuels are burned. Burning is a chemical change that creates something new like smoke, smog, ashes, and harmful toxins. Acid rain – precipitation that can harm living things and break down Earth materials. Humans can’t see or feel acid rain but things that are exposed to it for years and years will eventually die or break down. Acid rain – precipitation that can harm living things and break down Earth materials. Humans can’t see or feel acid rain but things that are exposed to it for years and years will eventually die or break down. Conservation – using resources wisely; saving. Humans can conserve soil, water, and energy. Farmers practice conservation by contour plowing, irrigation, and crop rotation. Conservation – using resources wisely; saving. Humans can conserve soil, water, and energy. Farmers practice conservation by contour plowing, irrigation, and crop rotation. Deforestation – The removal of forests. This not only causes living things to lose their homes but it can also cause flooding, landslides, and erosion of the land. Deforestation – The removal of forests. This not only causes living things to lose their homes but it can also cause flooding, landslides, and erosion of the land.