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Antibiotics are medicines used to treat infections or diseases caused by bacteria (e.g. respiratory tract infections such as pneumonia and whooping cough).Antibiotics are used for a range of other infections caused by bacteria, including urinary tract infections, skin infections and infected wounds.Antibiotics have saved millions of lives since they were first introduced in the 1940s and 1950s. However, because they have been overused, many antibiotics are no longer effective against the bacteria they once killed. Find out what antibiotic resistance is and how it can affect you, and how you can help prevent it.

Strep throat is a bacterial throat infection that can make your throat feel sore and scratchy. Only a small portion of sore throats are the result of strep throat.It's important to identify strep throat for a number of reasons. If untreated, strep throat can sometimes cause complications such as kidney inflammation and rheumatic fever. Rheumatic fever can lead to painful and inflamed joints, a rash and even damage to heart valves.Strep throat is most common between the ages of 5 and 15, but it affects people of all ages. If you or your child has signs or symptoms of strep throat, see your doctor for prompt treatment

Ebola virus disease (EVD), formerly known as Ebola haemorrhagic fever, is a severe, often fatal illness in humans.The virus is transmitted to people from wild animals and spreads in the human population through human-to-human transmission.The average EVD case fatality rate is around 50%. Case fatality rates have varied from 25% to 90% in past outbreaks.The first EVD outbreaks occurred in remote villages in Central Africa, near tropical rainforests, but the most recent outbreak in West Africa has involved major urban as well as rural areas.

The sea is home to billions of plants and animals. Many live only near the sunlit surface. Here you’ll find everything from microscopic plankton to the giant blue whale. Oceanographers classify marine organisms by separating them into two primary groups: plants and animals. We’ve actually discovered more about space than the ocean.

Although the ocean covers two-thirds of the surface of the Earth, it is surprisingly vulnerable to human influences such as overfishing pollution from run-off, and dumping of waste from human activity. This kind of pollution can have serious economic and health impacts by killing marine life and damaging habitats and ecosystems. Toxins from pesticides, fertilizers, and other chemicals used on farms contaminate nearby rivers that flow into the ocean, which can cause extensive loss of marine life in bays and estuaries leading to the creation of dead zones. The dumping of industrial, nuclear and other waste into oceans was legal until the early 1970’s when it became regulated; however, dumping still occurs illegally everywhere.

A frog is an amphibian. They lay their eggs in water. The eggs hatch into a tadpole which lives in water until it metamorphoses into an adult frog.Tadpoles look more like fish than frogs, they have long finned tails and breathe through gills.An amphibian can live both on land and in water.Although frogs live on land their habitat must be near swamps, ponds or in a damp place. This is because they will die if their skin dries out.Instead of drinking water, frogs soak it into their body through their skin.Frogs breathe through their nostrils while also absorbing about half the air they need through their skin.Frogs use their sticky, muscular tongue to catch and swallow food. Unlike humans, their tongue is not attached to the back of its mouth. enabling the frog to stick its tongue out much further.

During the first trimester your body undergoes many changes. Hormonal changes affect almost every organ system in your body. These changes can trigger symptoms even in the very first weeks of pregnancy. Your period stopping is a clear sign that you are pregnant. Other changes may include: Extreme tiredness, Tender, swollen breasts. Your nipples might also stick out. Upset stomach with or without throwing up (morning sickness)Cravings or distaste for certain foods, Mood swings, Constipation (trouble having bowel movements)Need to pass urine more often,Headache.

El Niño is the warm phase of the El Niño Southern Oscillation (commonly called ENSO) and is associated with a band of warm ocean water that develops in the central and east-central equatorial Pacific (between approximately the International Date Line and 120°W), including off the Pacific coast of South America. El Niño Southern Oscillation refers to the cycle of warm and cold temperatures, as measured by sea surface temperature, SST, of the tropical central and eastern Pacific Ocean. El Niño is accompanied by high air pressure in the western Pacific and low air pressure in the eastern Pacific. The cool phase of ENSO is called “La Niña” with SST in the eastern Pacific below average and air pressures high in the eastern and low in western Pacific. The ENSO cycle, both El Niño and La Niña, causes global changes of both temperatures and rainfall. Mechanisms that cause the oscillation remain under study

Deposition is the geological process where material is added to a landform. This happens quite often. Some parts of a shoreline build up and grow out, whereas other parts of the shoreline erode and fall into the sea.In deposition, wind and water lay down grains of material that has been eroded and transported from another place. Deposition happens when the forces which transport sediments are weaker than the forces of particle weight and friction. This causes a resistance to movement, and the particles drop down.Deposition can also refer to the buildup of sediment from organically derived matter or chemical processes

Have you ever wondered why your leg kicks when the doctor taps your knee with that little rubber hammer? It's because of your reflex.A reflex is an involuntary, or automatic, action that your body does in response to something without you even having to think about it. You don't decide to kick your leg, it just kicks. There are many types of reflexes and every healthy person has them. In fact, we're born with most of them.Reflexes protect your body from things that can harm it. For example, if you put your hand on a hot stove, a reflex causes you to immediately remove your hand before a "Hey, this is hot!" message even gets to your brain.

Sorry no clever emoji for this one.Deposition is the geological process where material is added to a landform. This happens quite often. Some parts of a shoreline build up and grow out, whereas other parts of the shoreline erode and fall into the sea.In deposition, wind and water lay down grains of material that has been eroded and transported from another place. Deposition happens when the forces which transport sediments are weaker than the forces of particle weight and friction. This causes a resistance to movement, and the particles drop down.Deposition can also refer to the buildup of sediment from organically derived matter or chemical processes

No planet earth did not have a lover (for anything it would be Saturn for its ring). Our earth we call home was once one huge continent called Pangea. But that was 245 million years ago. A brainiac named Alfred Wegner came up with this conclusion, claiming that tectonic plates where the main reason for the breaking up of Pangea. This created 2 massive continents called Luraisa and gonwana. This was 135 years ago! Tectonic plates move again splitting the two huge continents 65 million years ago. This hypothesis can be backed up by the fact that fossils of the same species can be found in different places around the world

Dolphins are magical creatures who have been on Earth for some 25 million years, according to fossil evidence. The first recorded studies of dolphins and dolphin behavior was undertaken by the ancient Greek philosopher Aristotle (384-322 BC) in Historia Animalium, (The History of Animals). Aristotle was the first to correctly claim that dolphins were mammals. He observed that they bore their young alive and suckled them, breathed air and communicated by underwater sounds.Through the ages, people and dolphins have had a special bond. There are many well-documented stories throughout history of ancient mariners who were guided to safety by dolphins. Dolphin insignias were commonly used on ancient ships for protection. Ancient artifacts show dolphins being used in decorative ways

Cotton candy is a soft candy that look like a fluffy mass of cotton (but there is no cotton in cotton candy). Cotton candy is made from granulated sugar that is heated and spun into strings (the weird machine guys).Cotton candy was invented in 1897 by William Morrison and John C. Wharton, candymakers from Tennessee. It formed a treat that they originally called “Fairy Floss

The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person’s body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves. Muscle tissue is also found inside of the heart, digestive organs, and blood vessels. In these organs, muscles serve to move substances throughout the body

The green basilisk lizard is also called a plumed or double-crested basilisk; but its amazing ability to run on water gives this species its most recognizable moniker: the Jesus Christ lizard. Found in tropical rain forests of Central America , green basilisks spend much of their time in the trees and are never far from a body of water. When threatened, they can drop from a tree into the water and sprint, upright, about 5 feet (1.5 meters) per second across the surface.(they was running)To do this, they have long toes on their rear feet with fringes of skin that unfurl in the water, increasing surface area. As they quickly churn their legs, they slap their splayed feet hard against the water, creating a tiny air pocket that keeps them from sinking, provided they maintain their speed. They can move along the surface like this for 15 feet (4.5 meters) or more. When gravity eventually does take over(stupid gravity), the basilisk resorts to its great swimming skills to continue its flight.

Tsunami are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases