Classification of Reptiles

There are more than 8,200 living species of reptiles, with the majority being snakes or lizards. They are commonly placed in four different orders. Order Characteristics Crocodilia: crocodiles, alligators, caimans, gharials They have four sprawling legs that can be used to gallop; they replace their teeth throughout life; they have strong jaws and a powerful bite; they have […]

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Types of Phylum: Characteristics with examples

Here is a list of important phylum: Phylum Characters Examples Protozoa Single celled animals Unicellular Animals like Amoeba, Paramoecium, Monogystis and Malaria parasite Porifera Pore bearers sponges Cnidaria Hydra, Jelly-Fishes, Sea-Anemones and Corals Coelenterata Common body cavity and digestive cavity Platyhelminthes Flatworms flatworms, tapeworms, flukes Nematoda Thread-like worms roundworms Annelida Metamerically segmented animal earthworms, leeches, […]

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Aquatic Biomes

Marine Biomes The ocean is the largest marine biome. It is a continuous body of salt water that is relatively uniform in chemical composition; it is a weak solution of mineral salts and decayed biological matter. Within the ocean, coral reefs are a second kind of marine biome. Estuaries, coastal areas where salt water and […]

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Glands: Hormones, Function & Disease

Glands Hormones Functions Disease Pituitary anterior lobe Growth hormone (GH) Promotes growth of body tissues Gigantism (hypersecretion) Dwarfism (hyposecretion)   ACTH (adrenocoticotrophic hormone) Stimulates hormone release by adrenal cortex     TSH (thyroid-stimulating hormone) Stimulates thyroid hormone release from thyroid     Follicle-stimulating hormone (FSH) Stimulates gamete production in gonads   Luteinizing hormone (LH) Stimulates […]

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Quiz: Digestive system and vitamins

Your digestive system, one of the largest organ systems in your body, proves essential for survival. Your digestive organs help you derive energy from food, allow your body to absorb essential nutrients and help eliminate waste products that would otherwise harm your health. Once you take your vitamin and it’s broken down in your stomach, and then sent […]

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Photosynthesis

Photosynthesis ( photo =light, synthesis-= putting together ) is the process of formation of simple sugars by green plants, some bacteria, and some protistans from water from soil and carbon dioxide from air in presence of sunlight and chlorophyll. Photosynthesis converts light/solar energy into chemical energy, and thus is very important to life. Chemical equation […]

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Food Chain and Food Web

A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another. In a food chain, each organism occupies a different trophic level, defined by how many energy transfers separate it from the basic input of the chain. At the base of the food chain lie the primary producers. The primary […]

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