検索キーワード： 生物学

The mountain habitat provides shelter and water for cunning predators, and the wolf and the golden eagle thrive there. The wolf can travel 50 miles a day to find prey. The striking force of a golden eagle’s talons can be compared to that of a bullet. But which animal is the fiercest of the ecosystem? Compare and contrast each animal’s features and skills before you declare the winning predator.

You see a fin poke out of the water. It’s a big gray animal with a friendly face. It looks like a dolphin, but is it a porpoise? Dolphins and porpoises are similar, but they have some important differences. Find out how their fins, mouths, teeth, and behaviors can all help you tell these two animal look-alikes apart.

The dark floor and muddy rivers of the rain forest are perfect for hunting, and the jaguar and crocodile both stalk their prey with ease. But which animal is the fiercest of the ecosystem? Does the jaguar's speed give it an edge? Or does the crocodile's strength make it superior? Compare and contrast each animal’s features and skills before you declare the winning predator.

The massive grassy African savanna is filled with the hunting activity of predators and their prey. The stamina of the hyena allows the animal to hunt its prey until it is too tired to fight. The lion’s strength makes its attacks swift and severe. But which animal is the fiercest of the ecosystem? Compare and contrast each animal’s features and skills before you declare the winning predator.

An animal that looks like a turtle munches on some grass. It has scales and a hard shell. But is it a turtle or a tortoise? Turtles and tortoises are similar, but they have some important differences. Find out how their legs, feet, shells, and behaviors can all help you tell these two animal look-alikes apart.

Two beady eyes peek out of the water. Is it a crocodile or an alligator? They may look similar, but these two reptiles have many differences, including where they live and the shape of their snout. Let’s find out what fearsome creature is really lurking below the water and explore their differences.

The icy cold Arctic is home to both the powerful polar bear and intelligent orca, two mighty predators. But which animal is the fiercest of the ecosystem? Does the polar bear’s patience in stalking its prey and strength in attack put it on top? Or does the orca’s ability to work in a pod give it the edge?

Go for a hike in the woods and you’re sure to see a wide range of plants. Many colorful flowers and fruits seem perfectly harmless. But don’t be fooled by these beautiful plants. Some plants eat bugs, and some are poisonous, deadly enough to sicken or even kill a person!

Some dogs are black. Other dogs are brown. Some plants have purple flowers and others have white flowers. Living things have different traits that they pass onto their offspring. Let’s investigate traits to learn more!

Animals are living things. Rocks are nonliving. Why? Let’s investigate the differences between living and nonliving things!

Some animals live in water. Some animals live on land. The land that animals live on can be very different. What makes a place the right home for an animal? Let’s investigate habitats!

Plants make pollen so more plants can grow. The pollen needs to get from plant to plant. How does this happen? Let’s investigate pollination!

Plants are living things. They need certain things to grow and live. What are they? Let’s investigate what plants need to survive!

Animals are living things. They need certain things to grow and live. What are they? Let’s investigate what animals need to survive!

Bald eagles, bees, and bats all fly. But a bee is an insect. A bat is a mammal. And a bald eagle is a bird! Why are these animals sorted into different groups? Let’s investigate animal classification!

Space isn't just the final frontier—it's big business! From exploration to space vacations, learn how private businesses are transforming the future of space travel and exploration.

Hi, there! I'm a sea turtle. I spend most of my days surfing in warm waters, but I started life much smaller! Learn more about my life cycle and how I went from a tiny little egg to a hatchling to an adult.

How did life begin? How many species are on our planet? Can we bring extinct species back to life? When it comes to life on our planet, there are a whole lot of questions we’re still trying to answer. Get ready to explore the unknown and discover how scientists are working to solve the mysteries of living things.

Gorgeous eyelashes. Flashy feathers. Silky hair. The animals in this book are far from drab and dull.

Why do we yawn? Are left-handed people more creative? Why do we have fingerprints? When it comes to our bodies, there are a whole lot of questions we’re still trying to answer. Get ready to explore the unknown and discover how scientists are working to solve the mysteries of the human body.