physiology

"Information ... about puberty, for girls, from the founder of the ... website HelloFlo.com"--Provided by publisher.

In Trees we follow an acorn as it learns about its future as Earth's largest, longest-living plant. Starting with the seed's germination, we learn about each stage until the tree's maturation, different types of trees, and the roles trees take on in our ecosystem.

"Discover the groundbreaking field of optogenetics, a biological technique that uses light to control cells in living tissue. Optogenetics helps researchers understand biochemical processes in live organisms and may someday be used to treat blindness, neural disorders, and other diseases."--Provided by publisher.

An illustrated look at the ways in which different animals use their ears, eyes, mouths, noses, feet, and tails to hunt, eat, defend themselves, and sense danger.

Explores what leaves look like and how they grow in different environments, as well as how they make food, how they change, and more.

Introduces girls to health and hygiene topics relating to the pelvic area of the body, discussing bladder health, constipation, pelvic muscle groups and pelvic fitness, menstruation, pelvic hygiene, and more. Includes diagrams, humorous illustrations, and a glossary of terms.

Presents facts about the adaptations of different species of reptiles, including snakes and turtles.

Presents facts about the adaptations of different species of mammals, including sea otters, polar bears, and bighorn sheep.

"You chew and swallow your sandwich, but what happens next? You may know that it goes through your body, giving you energy. Birds, snakes, cows, and earthworms also digest food to receive energy. But the process food takes from start to finish is more complex than you might have thought. Dive deep into digestion"--Provided by publisher.

One major adaptation of mammals is part of what differentiates them from other animals: the growth and nourishment of babies inside the mother's body. Water-repelling fur, tough hides, camouflage, as well as the size and shape of various body parts are just a few other adaptations mammals have developed in order to better survive their environment. Readers learn many examples of how mammals have evolved to hide from predators and hunt for prey. Graphic organizers present even more information to aid readers' understanding while full-color photographs bring them close to animals they might otherwise only see in a zoo.