"In this book, early fluent readers will learn why zebra mussels are considered an invasive species, how they have established themselves in and impacted new ecosystems, and what scientists are doing to combat the problem. Color photographs and carefully leveled text will engage young readers as they learn more about zebra mussels and how scientists work to control their population"--Provided by publisher.
"Through reading about how zebra mussels came to freshwater lakes, readers learn what invasive species are and how they can cause great harm to native ecosystems. Facts about the spread of zebra mussels and efforts to stop this spread introduce readers to conservation..."--Publisher.
Explains what zebra mussels are, how they form, and how and where they live, looks at how zebra mussels spread beyond their native habitats, and discusses the problems caused by invading zebra mussels and what is being done to control the spread.
