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What are examples of good and bad bacteria ?

L. acidophilus is the most commonly used good bacteria. It exists in the intestines and assists with the digestion process by producing hydrogen peroxide and lactic acid, preventing bad bacteria from growing. L. acidophilus is found in probiotic yogurt.\nBifidobacterium bifidum is a good bacteria that can help to heal a stomach ulcer caused by a bad type of bacteria called Helicobacter pylori. It can also relieve irritable bowel syndrome, yeast infections and atopic eczema. Streptococcus thermophilus is a good bacteria that can help to relieve symptoms associated with lactose intolerance, such..

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What are some ways kids can help conserve energy?

Appliances such as dishwashers, washing machines and dryers use up a lot of energy. Kids can ask their parents what time energy rates go down for their area. Parents and kids can set up a schedule and make a commitment to only run these appliances when the rates are lower. If parents are working during the lowered rates, then their kids can run the dishwasher or do the laundry while they are gone.\nChildren also save energy by avoiding baths. Taking a five minute shower uses up half the amount of hot water that a bath does. Kids can research energy-efficient shower heads to conserve even more ..

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What is an example of an agonist muscle?

Most muscle groupings establish a pair of muscles that work together to move a given joint. For each movement, one muscle is designated as the agonist muscle, while the other is considered the antagonist muscle. The agonist muscle is always the muscle that contracts to create the particular movement, while the antagonist muscle contracts to return the joint to its original resting position. When extending an arm into a straight position, the triceps is considered the agonist muscle and the biceps is the antagonist, since the triceps muscle generates the motion to straighten the arm and the bic..

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What causes urine odor?

Different foods, medications and vitamins may affect the scent of urine. Asparagus is well known for affecting urine odor. The smell is caused by enzymes breaking down a sulfur compound contained in the vegetable, reports WedMD. Some diabetics may observe that their urine has a sweet smell, which is caused by sugar excess.\nUnusual smelling urine may indicate illness, says Mayo Clinic. These conditions include bladder infections, bladder inflammation, dehydration or a metabolic disorder. Maple syrup urine disease, gastrointestinal bladder fistula and diabetic ketoacidosis are also conditions t..

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What are the pros and cons of biodiversity?

The University of Copenhagen, in a publication for ScienceDaily, made the point that a biodiversity crisis exists, implying that the loss of species leads to destruction of essential habitats. This habitat loss alters the course of ecological interactions significantly by removing essential living organisms from the systems. Humans rely on other living organisms for their own health through breathing oxygen produced by plants or consuming exogenous products made by other animals. Destruction of the habitats that sustain valuable human resources is seen as a threat by people who cherish biodive..

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Which Apollo mission blew up on the launch pad?

The Apollo 1 fire occurred on a pre-flight test for what was scheduled to be the first manned Apollo mission. Following this disaster, the next five Apollo missions were unmanned. Manned missions resumed on Oct. 11, 1968, when Apollo 7 was the first successful mission, orbiting the earth 163 times.\nThe next several missions were successful. Apollo 13 had an explosion during the mission, but the spacecraft eventually landed safely. Apollo 17, the last mission and the last time men landed on the moon, concluded on Dec. 19, 1972.

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How does a car-speed radar gun work?

Car-speed radars come in two other main forms: stationary and moving. Stationary radar determines a vehicle's speed by creating a mixed signal, known as a heterodyne, from the combined transmitted and received radio waves. The frequency of the heterodyne is then measured to calculate the speed of the moving vehicle. Moving radar works by receiving reflected radio waves from the moving vehicle and a stationary object in the background. The moving radar then compares the differences in the two radio waves' frequencies to calculate the speed of the moving vehicle.\nA laser speed gun wor..

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Why do we only see one side of the moon?

Tidal locking, also known as synchronous rotation, is a common occurrence among astronomical bodies. Besides the Earth-moon system, both moons of Mars and the Galilean satellites of Jupiter are all tidally locked to their primaries.\nTides induced by the larger body in the smaller creates bulges and gravitational distortions, which over millions of years slow an object's rotation down, until it becomes synced with its orbit.

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What are the uses of iron?

Iron is prized because it is abundant, inexpensive and easily made into many alloys that are stronger, harder and more durable than the original metal. Iron itself is easy to weld. It can be drawn into wires, hammered into thin sheets, cast, forged and machined. For many animals, iron is also necessary for good health. Iron atoms in hemoglobin are used to transport oxygen in the blood.

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How much does Pluto weigh?

According to Space.com, Pluto has a diameter of 1,430 miles. This is equal to only 20 percent of Earth's diameter and, taken with the dwarf planet's low mass, establishes its density at only just over 2 grams per cubic centimeter. This is only 40 percent of Earth's density, suggesting that Pluto has a dramatically different composition and internal structure.

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