LIFE SCIENCE

Detailed explanation-1: -The aphotic zone is the deepest part of the ocean and has no light. It is below 3000 ft and is also known as the midnight zone. It is filled with invertebrates and life forms that can live under extreme pressure, such as fish that glow in the dark and the coelacanth.

Detailed explanation-2: -Wetlands are considered the most biologically diverse of all ecosystems. Plant life found in wetlands includes mangrove, water lilies, cattails, black spruce, cypress, and many others. Animal life includes many different amphibians, reptiles, birds, insects, and mammals.

Detailed explanation-3: -Estuaries are home to unique plant and animal communities that have adapted to brackish water-a mixture of fresh water draining from the land and salty seawater. However, there are also several types of entirely freshwater ecosystems that have many similar characteristics to the traditional brackish estuaries.

Detailed explanation-4: -Boreal Forests and Arctic Tundra The soils of the Arctic tundra may remain in a perennially frozen state referred to as permafrost. Notable animals in the Arctic tundra include caribou (reindeer ), musk ox, arctic hare, arctic fox, snowy owl, lemmings, and polar bears.