生物
生命、细胞与生态系统
你要讲的内容 · 先选年级
3 年级共 5 个知识点
What Is an AdaptationHow special body parts or behaviors help an animal or plant survive in its own habitat.开讲 →Animal CamouflageHow an animal's colors and patterns can hide it from predators or from the prey it hunts.开讲 →Traits From ParentsWhy living things pass down features like fur color, size, or petal shape to their babies.开讲 →Instinct vs Learned BehaviorThe difference between behaviors an animal is born knowing and ones it has to learn.开讲 →Migration and HibernationHow migration and hibernation help animals live through the cold season when food is scarce.开讲 →
往后的路 · 年级阶梯
Pick a grade · difficulty climbs 1 → 12
生物 across the grades
Grade 6Middle school
Cells — the unit of life · using a microscope