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  • Intraocular pressure is defined as the pressure inside the eye. It was what gives our eye their shape and keeps vital structures in the eye in place. But there are other things about the pressure in the eye that can actually cause problems.

    Definition of Intraocular Pressure

    Definition of Intraocular Pressure

    by Melissa Flagg COA OSC11

  • Many people struggle to tell these two reptiles apart, but it isn't that difficult when you know what to look for. What is the difference between alligators and crocodiles? Well, there are essentially 5 main ways to tell them apart...

    The 5 Main Differences Between Alligators and Crocodiles

    The 5 Main Differences Between Alligators and Crocodiles

    by Paul Goodman50

  • Learn some facts about common songbirds of Pennsylvania and view pictures to help you identify and attract the birds in your backyard.

    15 Common Songbirds of Pennsylvania

    15 Common Songbirds of Pennsylvania

    by Eric Dockett23

  • Science has proven that redheads are physically unique among all other people. Find out why, historically, some people thought they were evil, while others thought they held magical powers.

    How Are Redheads Unique and Different?

    How Are Redheads Unique and Different?

    by C E Clark167

  • The first of four basic guides to the night sky, and what can be seen with the naked eye or binoculars. This page identifies the many kinds of objects you can see when you look up at the night sky

    Astronomy—A Beginner's Guide to the Night Sky

    Astronomy—A Beginner's Guide to the Night Sky

    by Greensleeves Hubs32

  • Moray eels and wolf eels have elongated bodies and live on the ocean bottom. They have each developed some very interesting and unusual body features and behaviours.

    Moray and Wolf Eels: Interesting Fish Facts

    Moray and Wolf Eels: Interesting Fish Facts

    by Linda Crampton26

  • Different Types of Stars in the Universe - Physical characteristics and images of the many different kinds of stars, from red giants to white dwarfs.

    Different Types of Stars in the Universe

    Different Types of Stars in the Universe

    by Thomas Swan27

  • Parasites are everywhere. They live on your skin, in your hair and even inside you! Some are harmless, many are necessary for health, and a few are DEADLY. Let's find out more about crazy PARASITES...

    Top Ten Interesting and Fun Facts About Parasites

    Top Ten Interesting and Fun Facts About Parasites

    by Amanda Littlejohn25

  • Don't let mind readers and magicians mess with your mind with number tricks. Learn their secrets and beat them at their own game.

    It's Not Magic, It's Mathematics

    It's Not Magic, It's Mathematics

    by George Dimitriadis1

  • Honey bees are very smart despite having tiny brains. They can learn; they have good memories, and they can communicate using a unique symbolic language.

    How Smart Are Honey Bees?

    How Smart Are Honey Bees?

    by Catherine Giordano27

  • Puffins are most people’s favourite sea bird, and Scotland has plenty of great places to view them. Whether you are a visitor or native to Scotland, this article shows you where to go. And it’s filled with cute photos!

    Where to Find Puffins in Scotland

    Where to Find Puffins in Scotland

    by Yvonne Spence65

  • Destruction of our environment is the biggest contribution that we make to the extinction of many species in the forest. It is estimated that approximately half the number of world’s animals live in the rain forests. Due to the rapid disappearance of rain forests many animals living in them are now endangered. Every plant and animal needs an ideal environment where they can survive. No life can exist without proper and sufficient source of food, water and shelter. There should be a balance betwe

    Endangered Animals in the Rainforest

    Endangered Animals in the Rainforest

    by livingsta143

  • The lion is a multi-cultural symbol of power and strength. But how much do we really know about them? Among the things we know well about them, is their hunting ability. This Hub explores the hunting behaviour of the lion in-depth...

    How Do Lions Hunt?

    How Do Lions Hunt?

    by James Kenny37

  • Students have an excellent chance of doing well on a physics exam if they work efficiently throughout the physics course and follow some tips for writing exams.

    How to Pass a High School Physics Exam

    How to Pass a High School Physics Exam

    by Linda Crampton24

  • Do you ever wonder how Magic Squares are created? Well, stop worrying. I'll show you how to construct them using just a few easy to follow rules.

    How to create magic squares

    How to create magic squares

    by George Dimitriadis0

  • Fishing cats are wild animals that feed primarily on fish and are at ease in water. Unfortunately, their population is in trouble due to habitat destruction.

    The Fishing Cat:  A Threatened Animal of Asia

    The Fishing Cat: A Threatened Animal of Asia

    by Linda Crampton115

  • The bunya pine produces huge and often very heavy cones. Its large seeds are both edible and tasty. The tree has a strange appearance and some unusual features.

    The Bunya Pine: A Strange and Useful Tree

    The Bunya Pine: A Strange and Useful Tree

    by Linda Crampton100

  • Top predators, such as sharks, are vital to the health of all ecosystems, but they are being hunted and killed close to extinction.

    Sharks Are Not That Dangerous

    Sharks Are Not That Dangerous

    by Rupert Taylor3

  • The dragon blood tree of Socotra Island has an unusual appearance. It secretes a red resin known as dragon's blood when its bark is injured. The resin is used in many ways.

    The Strange Dragon Blood Tree of Socotra Island

    The Strange Dragon Blood Tree of Socotra Island

    by Linda Crampton50

  • Spiders both fascinate and frighten people. Check out these weird, amazing, interesting and fun facts about spiders taken from science, history, literature and mythology with cool photos and videos.

    Top Ten Interesting and Fun Facts About Spiders

    Top Ten Interesting and Fun Facts About Spiders

    by Amanda Littlejohn33

  • Some of the most majestic endangered species are the big cats. There are many different cats that are endangered, including: ocelots, jaguars, bengal tigers, and sumatran tigers.

    Endangered Wild Cats of the Rainforest

    Endangered Wild Cats of the Rainforest

    by Angela Michelle Schultz16

  • This is a basic guide to what you can see on the surface on the Moon - there is as much that can be seen on the Moon with a pair of binoculars, than in the whole of the rest of the sky put together.

    Astronomy - A Beginner's Guide to the Moon

    Astronomy - A Beginner's Guide to the Moon

    by Greensleeves Hubs15

  • Why is the sky at night dark if stars are everywhere? Read on to find out the surprising answer!

    What Is Obler's Paradox?

    What Is Obler's Paradox?

    by Leonard Kelley3

  • There are supposedly dozens if not hundreds of poisonous herbs that grow around the world. Doctors and pharmaceutical companies warn us about these herbs..yet some of these herbs are used in our meds.

    4 "Poisonous" Herbs Used in Western Medicine

    4 "Poisonous" Herbs Used in Western Medicine

    by Nicole Canfield19

  • Just recently my family and I discovered a family of owls living in the oak tree in our backyard. We had seen the father owl perched upon a ladder in our neighbor's backyard the weekend prior to when my husband noticed the whole family hanging out on a branch the following weekend. We both were immediately fascinated by these wise, majestic creatures and so I've been inspired to write a hub about the different types of owls in Florida.

    A Look at the Different Types of Owls in Florida

    A Look at the Different Types of Owls in Florida

    by Nicole Canfield30

  • The triangle is the simplest polygon This article covers types of triangles, Pythagoras's theorem, cosine rule, sine rule, various ways of calculating the area of a triangle and basic trigonometry

    How to Calculate the Sides and Angles of Triangles

    How to Calculate the Sides and Angles of Triangles

    by Eugene Brennan25

  • This is the third page in a series of guides for anyone who wants to learn a little more about our night sky. This page looks at those most numerous of all objects visible in the night sky - the stars

    Astronomy—A Beginner's Guide to the Stars

    Astronomy—A Beginner's Guide to the Stars

    by Greensleeves Hubs10

  • The banana spider is famous for its beautiful web, which appears to be golden when it shines in the sun. The spider's venom is of the same type as that of a black widow, but much weaker.

    Facts About Banana or Golden Orb Spiders

    Facts About Banana or Golden Orb Spiders

    by Paul Goodman50

  • Hair color is primarily genetic, and red hair is caused by mutations in the MC1R gene. The gene for red hair also causes an increased sensitivity to sunlight and a reduced sensitivity to anesthesia. Contrary to internet rumors, redheads are not going extinct! Famous redheads include Queen Elizabeth I and Malcolm X.

    Redheads: The Genetics of Hair Color

    Redheads: The Genetics of Hair Color

    by Leah Lefler69

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