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What role do scavengers play in rainforests?

Many kinds of scavengers exist in the rainforest. Insects can be scavengers, feeding on dead matter and helping break it down while transporting the nutrients throughout the rest of the ecosystem. Even animals that primarily hunt for food, such as leopards and jaguars, can also scavenge meals when necessary.\nOne of the true scavengers of the rainforest is the king vulture, a bird that subsists completely upon carrion, which is food killed by other animals. The king vulture looks out for possible meals as it soars above the ground. Once it spies carrion, it dives down and uses its large size t..

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What sounds do rats make?

The pitch and frequency of rat vocalizations are a way to determine the intent behind the noise. The sound that is called a “Peep” features an elevated pitch, starting from a high tone and moving upward. One sound a rats make is the “Brux,” which sometimes continues for many minutes. When a rat is bruxing, it is often a sign of relaxation but can also indicate loneliness or uncertainty.

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Who discovered Mercury and when was it discovered?

The earliest record of Mercury is in the Mul.Alpin tablets, believed to be written in the 14th century B.C. by Assyrian astronomers. In these tablets, Mercury is referred to as "the jumping planet."\nAs early as the first millennium B.C., Babylonian records included mentions of Mercury, then named Nabu. The first telescopic observation of the planet was made in the early 17th century by Galileo. The planet is named after the Roman messenger god Mercury.

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What are the types of black holes?

Stellar black holes are the result of a star in excess of around three times the mass of the sun collapsing beyond the point of no return under its own gravity. The collapsing star rapidly becomes so dense that its escape velocity rises above the speed of light, and it forms an event horizon.\nSupermassive black holes have a mass of billions of suns and are found in the centers of galaxies. It is not known exactly how these black holes form, but they are known to grow by consuming thousands of stars surrounding them. The frictional heating of these torn-apart stars spiralling into the black ho..

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What gases do humans exhale?

When inhaling, humans take in approximately 21 percent oxygen, 0.04 percent carbon dioxide and 79 percent nitrogen. On exhalation, humans give off approximately 16 percent oxygen, 4 percent carbon dioxide and 79 percent nitrogen, according to the BBC; only the amount of nitrogen remains constant in the exchange. Exhaled air also contains water vapor. Red blood cells travel by vein to the lung; they give of carbon dioxide and take in oxygen.

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What is a characteristic that helps organisms survive?

Depending on the type of organism, adaptation can be rapid, or it may take hundreds of years. Microorganisms reproduce rapidly, which allows them to adapt quickly. Mammals, on the other hand, are much slower due to their longer lifespan. Organisms may adapt their physiology, behavior or structure to adapt to their environment. For example, worms living in deep sea environments alter their bacterial covering to survive, animals compete against each other to hunt for food that allows them to survive and cacti with more thorns are less likely to experience attacks.How an organism adapts depends o..

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What year was electricity invented?

Even though most people refer to Franklin as discovering electricity, he was not the first person to discover it. In 600 BC, the Greeks discovered that when they rubbed fur on amber, it created a small electrical charger or "static electricity." In the 1600s, several physicians and scientists used the word electricity when describing some of their work, studies and inventions. Throughout time, a number of different people have had a hand at creating the electricity that most people have in their home.

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What happens in prophase II?

Meiosis is a process of cell division that is necessary for sexual reproduction. It takes place in two stages, and the end result is four daughter cells. Each of the daughter cells contains half the number of chromosomes as the parent cell from which they came.\nThe first division, meiosis I, consists of prophase I, metaphase I, anaphase I and telophase I.\nThe second division, meiosis II, follows with prophase II, metaphase II, ananphase II and telophase II.

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What is the function of the human stomach?

The stomach is a very stretchy organ able to expand up to a gallon in capacity in some people, although the stomach works much better and is more comfortable at half that capacity. The stomach typically stores digested food for one or two hours before beginning to move it into the small intestine. During this time, it releases a substance called gastric juice, which is a mixture of mucus, hydrochloric acid and enzymes. This substance kills many of the bacteria in the food and helps break down various components in the food.\nOf course, the stomach itself is made of protein substances, so if un..

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What are the properties of silver?

Silver is also quite malleable and ductile. Malleable means that it can be beaten into sheets without tearing and ductile means it can be pulled into wire without snapping. Silver's contact resistance is also lower than any other metal.\nSilver is also the most reflective of metals. The metal is used in solar power reflectors and in water purification systems. The presence of silver discourages the build up of pathogens and reduces the need for somewhat toxic chemicals like chlorine.\nSilver, in the form of silver salts and silver nitrate, is used in photography. Its usage has declined as..

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