Book Creator

Animal kingdom

by Alejandro Arias

Pages 2 and 3 of 11

Animal Kingdom
By Alex Arias
Animals dominate human conceptions of life on Earth because of their size, diversity, abundance, and mobility. The presence of muscles and mobility is one of the primary characteristics of the animal kingdom.
Understanding and classifying the large variety of living species help us better understand how to conserve the diversity of life on earth. 
Next page will teach us about there habits!
A animal is a living organism that feeds on organic matter, typically having specialized sense organs and nervous syste.
A animal cell
Animals get their food by eating plants and algae and get the energy they need for the work. But some animals can eat other animals to get energy. For example, Bears can eat small animals.
Symmtery is important because its the main feature of nature that restricts the permissible dynamic laws. Its also how aniamls communicate. Example bumble bees, which have poor vision, but they can recognize symmetrical shapes.
To reproduce, animals need a male and female. Together they can create offspring, or babies.
Generally, their bodies consist of a rounded bell with a mouth on the underside.
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda
invertebrates feed by ingesting their prey directly, by filter feeding, or by actively capturing prey. Some groups of invertebrates live on land. Common examples include the earthworms, insects, and spiders.
Arthropods are invertebrates with segmented bodies and jointed limbs. The exoskeleton or cuticles consists of chitin, a polymer of glucosamine.
They make up about 75% of all animals on Earth and have a major role in maintaining ecosystems as pollinators, recyclers of nutrients, scavengers and food for other animals.
Most arthropods are scavengers, eating just about anything and everything that settles to the ocean floor. Skeleton shrimp feed detritus, algae or animals. Crabs feed on mollusks they crack with their powerful claws.
They inhabit a wide variety of habitats, with most species living within terrestrial, fossorial, arboreal or freshwater aquatic ecosystems.
Amphibians are small vertebrates that need water, or a moist environment, to survive. All can breathe and absorb water through their very thin skin. Amphibians also have special skin glands that produce useful proteins.
Amphibians swallow their prey whole, so they do not need teeth for chewing. They are called vomerine because they are found in the facial bone called the vomer.
Fish are aquatic vertebrate animals that have gills but lack limbs with digits, like fingers or toes. Recall that vertebrates are animals with internal backbones. Most fish are streamlined in their general body form.
Their diets range from microscopic plants to other large fish and aquatic mammals and birds. To obtain these various foods, they have developed foraging and hunting techniques