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What type of relationship do remora and sharks have?

According to the Animal Diversity Web, an online publication by the University of Michigan, the remora requires the continual travel of the shark and cannot survive in still waters. There are several species of remora, and some have even been found living in the mouths of sharks. Though it is unknown if the sharks consider the remora as undesirable, no remora remains have ever been discovered in the digestive tract of a shark.\nAncient Greek and Roman civilizations believed the remora had magical powers, with the Romans attributing the death of Emperor Caligula to the fish holding back his shi..

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Is air classified as a solution?

Although not gaseous, another example of a solution can be obtained by putting creamer into coffee. This is considered a homogeneous solution, because the creamer cannot be separated from the coffee through physical means. The Earth's atmosphere is an extremely important part to the success of life on the planet. The fact that the atmosphere is a solution ensures that plants and animals have a consistent mix of the gaseous elements that they require.

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What is the continental crust made of?

Igneous rocks are formed by the cooling of magma, found deep in the Earth, or lava flows. Intrusive igneous rocks include granite and tonalite. These rocks work their way to the surface over millions of years. Other rocks result when lava cools on the surface of the Earth. These include rocks such as obsidian and basalt.\nMetamorphic rock is rock that has transformed, also over a very long time, into another type of rock. These rocks include marble, which is made from the transformation of limestone and gneiss, which forms from schists and muscovite.\nThe rocks in the continental crust are som..

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What are some interesting facts about outer space?

While it is not detectable by the human ear, electromagnetic waves of this type may be found throughout the solar system and into interstellar space. A recording titled "The Sounds of Interstellar Space" on NASA.gov was recorded by the Voyager 1 probe after it had crossed the heliosphere and entered interstellar space. NASA has also recorded and made available an audio recording of what scientists call the chorus, an electromagnetic phenomenon that is caused by the plasma waves in the Earth's radiation belts. NASA has entitled this recording "Earthsong."\nSpace is very cold. In interstell..

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How does garbage affect the environment?

Most garbage ends up in landfills. These landfills are designed to stop the leaking of material into the rest of the environment to avoid contaminating water supplies. While they are being filled, landfills serve as a popular dining location for birds and other animals, but some of what they eat can cause diseases. Many covered landfills have been converted to parks and recreational areas, but they release methane and other gases through vents as their contents decompose.\nPlastic, in particular, has caused a number of environmental issues. Plastic is used for its durability, but this durabili..

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What is the name of the daily cycle?

Circadian rhythms are characterized by three main aspects: They last approximately 24 hours without external input, or endogenously; they can be reset, such as when traveling across time zones; and they compensate for changing temperatures without altering the 24-hour cycle. These three characteristics allow organisms to rely on circadian rhythms for regulating sleeping and eating patterns that are essential to survival.

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How many spinal nerves are there?

Each pair of spinal nerves connects a specific section of the body to the spine, explains Encyclopedia Brittanica. Each pair is split into two roots: the posterior, which carries sensory information from the corresponding body areas to the brain, and the anterior, which carries motor information from the brain to the corresponding body areas.

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Where can you access free images of landforms for kids?

Kidzsearch contains a list of landforms by mechanism of formation, with links to images of approximately 70 percent of the images listed. Each landform image also has a description of what it is and how it was formed. The NASA website contains more than 200 plates, each of which covers a landform type within the geographic region in which it occurs. Each plate is accompanied by commentary, photographs and locator maps. Some also include a map showing bedrock geology. The NASA list of landforms is much more extensive than the Kidzsearch list.

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What is 1/12 the mass of a carbon-12 atom?

According to HowStuffWorks, an atomic mass unit is defined as the mass of a single proton or neutron. Hydrogen, the lightest element, has an average mass of 1.00794 amu. A carbon-12 atom is made up of six protons and six neutrons, hence 12 atomic mass units. The mass of the electron is considered negligible, therefore electrons are not counted in measuring an atom's atomic mass. One mole of carbon-12 atoms, or 6.0221415 * 10^23 atoms, weighs exactly 12 grams.

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Do dogs have lips?

Dog lips may be partially hidden from view by thick fur, but underneath they are similar in appearance and texture to human lips. In dogs, the lips run right along the gum line. Pushing them back reveals a good view of all the teeth; this is not true of all animals, such as rabbits. Dogs lick their lips when they are anxious. This signals appeasement and passivity to threatening animals or people nearby. The wrinkly flews of hound breeds such as beagles helps them pick up scent particles from the air.

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