Did you know that every grassland is an ecosystem? It has plants and animals that need each other to live. Discover these and other interesting facts in Grasslands. Grasslands is part of the new EYEDISCOVER collection of AV2 books.

Did you know that an omnivore is an animal that eats both vegetation and other animals? Most bears are omnivores. People are omnivores, too. Discover these and other interesting facts in Omnivores.

Did you know that fish have lived on Earth for millions of years? There are more than 30,000 kinds of fish. Discover these and other interesting facts in Fish. Fish is part of the new EYEDISCOVER collection of AV2 books.

Did you know that there are five oceans? The largest ocean is the Pacific Ocean. Discover these and other interesting facts in Oceans. Oceans is part of the new EYEDISCOVER collection of AV2 books.

Did you know that the Grand Canyon is one of the most important landmarks in the United States? It is in Arizona. Discover these and other interesting facts in Grand Canyon.

Did you know that different places have different kinds of weather? There are many different kinds of weather. Discover these and other interesting facts in Weather. Weather is part of the new EYEDISCOVER collection of AV2 books.

The National Aeronautics and Space Administration (NASA) has had many missions since being established in 1958. In 1969, NASA put the first person on the Moon. Learn more in National Aeronautics and Space Administration, one of the titles in the Power, Authority, and Governance series.

Did you know that a year has four seasons? Spring comes after winter and before summer. Discover these and other interesting facts in Spring.

Did you know that the U.S. Army is older than the country it serves? It has more than 1.3 million active duty members. Discover these and other interesting facts in Army. Army is part of the new EYEDISCOVER collection of AV2 books.

Did you know that parasites live on or inside their source of food? Many parasites can be dangerous to their host. Discover these and other interesting facts in Parasites.