Kelp forest - Found in most oceans, they can reach up to 60 meters in height, and are formed by brown algae called “Kelps”. They are of great importance to the planet, as they capture carbon dioxide and release oxygen into the atmosphere. They are areas of protection, reproduction and feeding of a great diversity of species. Sea ​​grasses - They are found in coastal areas on all continents except Antarctica. They form extensive benches, functioning as large condominiums and nurseries for various animals. Critical to the health of the ocean, they filter pollutants from the water and store large amounts of carbon, which warms the atmosphere. Lake - Only 3% of the total water on planet Earth is fresh. Of that small percentage, just over 2% is frozen in glaciers, and less than 1% in rivers and lakes, available for consumption. Lake Baikal in southern Russia is the deepest and most voluminous on the planet. This UNESCO world heritage site contains 20% of the Earth's unfrozen fresh water, and more than 1,700 species of plants and animals. Polar Zone - The planet Earth has two polar regions, these areas receive less sunlight, thus being colder. To survive extreme temperature conditions, animals have several adaptations such as hibernating, reserving fat, having a lot of fur, etc.