Read the short descriptions of various habitats and match them with their features.

Polar habitats include the North Pole and the South Pole. These habitats are covered in ice and extremely cold and dry. Animals here include small fish, polar bears, penguins, leopard seals, etc.

Forest habitats include tropical forests, temperate forests, and boreal forests. They are considered the Earth's lungs because they produce oxygen. They also provide homes to bats, owls, deer, squirrels, foxes, lizards, etc.

Ocean habitats include the Pacific, Atlantic, Indian, Southern, and Arctic Oceans. They produce more than 50 per cent of Earth's oxygen and help adjust the climate. They provide living places for plants like sea grasses, microscopic algae, and fish, etc.

Grasslands include tropical and temperate ones. The main plants are grasses. They are crucial for grazing livestock. Grassland animals include giraffes, zebras, lions, elephants, etc.

1. Polar regions

a. two main types and are crucial for livestock grazing

2. Forests

b. largest, produce oxygen and adjust the climate

3. Oceans

c. extremely cold, dry, covered in snow and ice

4. Grasslands

d. the lungs of Earth, home to many species