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A savanna is a large, flat area of land covered with grass and only a few scattered trees. It is mostly found in hot regions, such as Africa and South America, and supports a wide variety of wildlife.

An estuary is the wide part of a river where it joins the sea. It is a unique place where fresh water from the river mixes with salty water from the ocean.

Undergrowth refers to the small plants, bushes, and shrubs that grow on the ground beneath the taller trees in a forest or wood. It is often dense and can make walking through the area difficult.

Germination is the process where a seed starts to grow into a new plant. It happens when the seed has enough water, the right temperature, and oxygen.

An evergreen is a tree or plant that keeps its green leaves all year round, even in the winter. Unlike deciduous trees, it does not lose its foliage during the cold seasons.

A group of animals or plants that are in danger of disappearing forever. There are very few of them left in the world, so people try to protect them.

A safe place where people or animals are protected from danger or trouble. It is also a quiet, peaceful place where you can feel calm and relaxed.

A mammal is a type of animal that breathes air, usually has hair or fur, and gives birth to live young. They are special because the mothers produce milk to feed their babies.

A reptile is a cold-blooded animal with dry, scaly skin that usually lays eggs on land. Snakes, lizards, turtles, and crocodiles are common examples of this group of animals.

An invertebrate is an animal that does not have a backbone or a skeleton inside its body. This group includes many common animals like insects, spiders, worms, and crabs.