Aquatic Adaptations of Mammals

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There are many animals that have adapted to living in water, but mammals have evolved a range of traits that give them a competitive advantage in the water. The aquatic adaptations of mammals are more diverse than the adaptations of any other group of animals. Mammals can be found in all kinds of water bodies, … Read more

Best Retinoscopes: Review and Buying Guide

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Retina transmits light down the optical nerve so you can see clearly in both bright and dim lighting conditions. The main function of the retina is to transform the rays of light (which strike the eye) into electrical impulses that travel through the optic nerve to your brain. This process allows you to see clearly … Read more

Lungfish: The Oldest Living Animal On Earth

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The lungfish is the oldest living animal on earth. It lives in muddy waters in Africa, South America, and Australia. What seems most surprising about these creatures is that they can survive without breathing air. They have developed the ability to respire through their skin, mouth, and gills. These fish can live without oxygen for … Read more

Human Body Tissue: What They Do and Why They Matter

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All human bodies are made up of four different types of tissues: muscle, nerve, blood, and skin. Each tissue has its own role to play in the body. For example, skin is the largest organ in the human body. It helps protect us by keeping out pathogens and absorbing moisture. It also protects against injury … Read more

Bone sclerosis: Causes, Symptoms, and Treatment

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Bone is a living tissue that responds to healthy or unhealthy conditions by becoming thicker or thinner. During childhood, bones are actively being built up, which slows down during the teen years. Bones are also being broken down, especially after age 20 due to wear and tear and weakening as we age. Bone tissue is … Read more