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How is hydrogen and oxygen separated in water?

In electrolysis, an electrode is passed through water. One end of the electrode becomes positively charged (anode), while the other is negatively charged (cathode). Hydrogen becomes attracted to the cathode, while oxygen becomes attracted to the anode.\nReplicate this experiment easily by using a 9-volt battery, two pieces of metal wire and two pencils. Sharpen both ends of the pencil and, using the wire, connect each pencil to one end of the battery. Place the other end of the pencils into the water. Hydrogen and oxygen will gather at each end. Salt can be added to increase the conductivity o..

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How do I describe the process of phagocytosis?

The process of phagocytosis begins as soon as the cell identifies a nearby cell or particle as one that it needs to engulf. This identification is often based on distinct proteins on the surface of the pathogenic cell or by a chemical reaction between a receptor on the cell's surface and the particle to be engulfed. The cell begins the phagocytosis process by forming a furrow in the cell membrane. The membrane flows around the particle or cell until it completely surrounds it, and then it pinches off, leaving the particle inside the cell, surrounded by a pouch called a phagosome, which is..

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What is the energy used by living organisms?

No organisms on earth can manufacture their own food except plants. Plants use carbon dioxide and light energy from the sun to create nutrients which act as energy for basic functions including growth and transportation. Animals that are classified as primary consumers get energy by eating plants. This means all the nutrients or energy that was created by plants is transferred to those animals that consume them.On the next level are animals that eat primary consumers. These animals or secondary consumers also acquire energy from the plant eating animals. There are also animals called tertiary ..

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How does air pollution affect animals?

Predators are at particular risk of harm from air pollution due to bioaccumulation, which is the build-up of high concentrations of toxic chemicals that occurs when the animals consume contaminated organisms, including fish, small mammals and plants. Habitat destruction due to changes in soil composition and the destruction of trees caused by acid rain also threatens wildlife in many areas of the world.\nParticulate pollution, or the accumulation in the atmosphere of tiny particles of dust and soot, is another direct threat to animal health. One study at Johns Hopkins University showed that an..

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How many Apollo missions were there?

The Apollo lunar manned missions included Apollo 8, 10, 11, 12,13, 14,15,16 and 17. Apollo 8 and Apollo 10 missions only orbited the moon, while the rest of the missions, with the exception of Apollo 13, did land on the moon. The Apollo 13 mission did not land on the moon because of an on-board accident that forced the crew to return to Earth.The Apollo program was launched in 1963 and lasted until the early 1970s. The goal of the Apollo program was to place a man on the moon. During the time period before the manned missions, there were many unmanned missions, such as the Apollo-Saturn missio..

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Why do plants need calcium?

Generally, plants absorb calcium from soil, and it is rare for a plant to have calcium deficiency. When too little calcium is available to a growing plant, disorders can develop, such as those that result in damaged lettuce tips or burned tomatoes. Too much calcium in the soil can be harmful to a developing plant, leading to issues such as deposits of calcium carbonate crystals in plant parts.

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How do you make your veins pop out of your arms and hands permanently?

Both men and women achieve muscle strength in the arms and hands by various exercises, many of which can be done at home with one's own body weight, reports Health.com. Super sets ? exercises that combine two different exercises with little to no rest in between ? build stronger muscles in less time, WebMD explains. This combined exercise should be done in sets that work opposite muscle groups, such as a set of triceps pushdowns with a set of bicep curls.\nKeeping body fat low is necessary for bringing out muscle definition, advises WebMD. In addition to keeping a healthy, clean diet to r..

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Is there a public dump for every county in the U.S.?

For example, Jefferson County's Department of Public Works in Washington has allocated a solid waste disposal facility at S.Jacob Miller Road, 3/4 mile off Highway 20. It also has a solid waste dropbox at 295312 Highway 101, South of Quilcene. Both residential and commercial waste can be disposed at either of these places.Other than throwing away electronic waste, there are options, such as recycling, trading or selling them. Companies like Home Depot recycle specific e-waste items. Samsung is one example of company that accepts trade-ins.

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How are electromagnetic waves different from mechanical waves?

Electromagnetic waves are actually created by the oscillations of electric and magnetic fields at right angles to each other. Electromagnetic waves move faster than any known mechanical wave. Electromagnetic waves tend to travel fastest through a vacuum. They travel slower through other materials, with their speed being inversely proportional to the density of the material.\nThis stands in stark contrast to mechanical waves, which often travel faster the denser their medium is. Longitudinal waves cause their medium to oscillate at a right angle to the wave's direction of travel. Compressi..

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What are examples of living things?

Plants are further classified into trees, shrubs and herbs. Animals are classified as mammals, birds and reptiles.\nLiving things are also identified according to their habitat. Aquatic creatures are different from terrestrial and arboreal ones. Birds are arboreal. There are plants that grow in the oceans, such as the sea weed. Corals grow on the shallow sea floor. Crabs, lobsters, oysters, squids and turtles inhabit the sea.\nAll living things need energy to survive and they respire. Living things reproduce, adapt to the environment and respond to stimuli.

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