Explains how human influence has both positvely and negatively affected other life on the planet, from hunting affecting animal populations to pollution and deforestation affecting habitats and biomes
Describes how humans have affected the content of Earth's atmosphere with such everyday activities as driving, heating buildings, and using aerosols, and explains how doing so affects the health of th
How do we know about the plants and animals that lived millions of years ago? Fossils! Every continent contains fossils that tell us about organisms that once existed on Earth. Fossils also give us de
Did you know rocks could go through metamorphosis? Intense heat or pressure changes the form of metamorphic rocks. This type of rock is the oldest found on Earth. Find out where metamorphic rocks are
Sedimentary rocks are all around you. They form from soil, gravel, dust, and other sediment. This type of rock is often affected by wind and water erosion. Learn how this can change an area’s landscap
Did you know igneous rock is formed as a result of volcanic activity? This type of rock is made up of minerals. Find out more about minerals, where igneous rocks form, and what purposes they serve. Yo
Pollution and mining for resources have negatively impacted Earth. Nonrenewable resources will someday run out. Then what? In this title readers will learn about alternative energy sources such as sol
Humans have influenced the world around them since they first walked on Earth. Hunting has impacted animal populations. Pollution and deforestation have affected habitats. Humans have also worked to p
The hydrosphere encompasses all water on Earth-from glaciers and ice to rivers and oceans. People use water every day. This title asks the question, how much do you use? Readers will learn how humans
"How do we know about the plants and animals that lived millions of years ago? Fossils! Every continent contains fossils that tell us about organisms that once existed on Earth. Fossils also give us d
