Animals that take on many forms are called chameleons and shape shifters. Shape shifters can contort their bodies to resemble something else, and chameleons can change color to blend into their environments.
The alternation of generations is the presence of two different life forms in the life cycles. Some animals that undergo this are invertebrates such as insects and crustaceans.
Polymorphism that involves two distinct forms during one life cycle can be very beneficial to animals because it means that the young do not compete with the adults for food. This allows a larger population of young to coexist with existing adults.
a precipitate
a precipitate
precipitate
The smallest membrane-bound unit of life in plants and animals is called a cell. Cells are the basic structural and functional units of living organisms, capable of carrying out essential processes such as metabolism, growth, and reproduction.
a skin
Heterotrophs are organisms that feed on other life forms. Animals are heterotrophs. Animals that eat other animals are carnivores.
Tiny microscopic water animals are called plankton. They play a key role in aquatic food chains and come in various forms, including phytoplankton (plant-like) and zooplankton (animal-like).
The organisms helping plants and animals are called symbioants. Usually micro-organisms like bacteria and some algal forms establish symbiotic relationship with plants and animals.
The reduction of oxygen that forms water occurs during respiration. It occurs when oxygen and hydrogen mix to form what is called metabolic water.
During the Ordivician Period, sea life ruled. Most of the animals were forms of fish and arthropods, including trilobites.