Roumanis, Alexis

Describes the ocean ecosystem covering more than half of Earth's surface and home to the blue whale, the largest animal on Earth.

Describes the features, location, and plant and animal life found in deserts.

Simple text and illustrations introduce young readers to the planet Mercury.

Simple text and illustrations introduce young readers to the planet Mars.

Describes the grassland ecosystem as a place made up of animals and plants that are interdependent.

Simple text and illustrations introduce young readers to the planet Venus.

Simple text and illustrations introduce young readers to the planet Uranus.

Simple text and illustrations introduce young readers to the planet Saturn.

Simple text and illustrations introduce young readers to the planet Neptune.

Simple text and illustrations introduce young readers to the dwarf planets, including Ceres, Pluto, Haumea, Makemake, and Eris.