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What is the function of the epithalamus?

The epithalamus is located in the interior of the brain. It is a small area that is primarily covered by the pineal gland. This area of the brain is often described as the most mysterious part because it was the last gland identified within the endocrine system. It was once referred to as a person's "third eye," and it was thought to serve as the place where the soul exists in the body, as well as the primary place where thoughts were developed in the brain. This was mostly because of its strong relation to processing light.

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Where in the sky and at what time can I view the Perseid meteor shower?

Between Aug. 9th to 12th, the best day to view the meteor shower is on the night that the moon is least illuminated, according to the Time and Date website. The overlap between the shower's peak and the phases of the moon change each year, with optimal viewing on nights with a new moon, as during the 2015 viewing.\nThe Perseid meteor shower is caused by the debris field left by the Swift-Tuttle comet, which takes 133 years to complete an orbit around the sun. The meteor shower is at its strongest right after the comet passes along the portion of its orbit that intersects with Earth's..

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Why should the Everglades be saved?

Saving the Everglades also helps to maintain Florida's economy, as the area provides the foundation for Florida's $67 billion tourism industry. The Everglades also have an impact on the $13 billion dollar outdoor recreation economy of Florida and a $100 billion agriculture sector of the state.\nFlorida is still reeling in many ways from government intervention that aimed to drain excess water from the state in the 1940s. This introduced a series of canals, levees, pump stations and other methods of controlling water into the wetlands. However, the process drained too much water, and ..

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Where does mitosis occur in plants and animals?

When cells undergo mitosis, the end result is two genetically identical daughter cells. Any genetic mutations are random. By contrast, meiosis is a process that occurs in germ cells in the male and female gonads of plants and animals. Meiosis yields two haploid daughter cells that are not identical to the parent. Unlike mitosis, cells that undergo meiosis go through a crossing over phase where genetic material is exchanged between chromosomes. This results in genetic variation.

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Do jellyfish have hearts?

Due to the large water composition of jellyfish, they mostly evaporate when they leave their natural habitat. The thousands of jellyfish species vary in size from less than an inch to several feet long. Jellyfish are equipped with sensors at the end of their tentacles to detect light and noise. Jellyfish have a long history in the ocean, having appeared on Earth over 650 million years ago.

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What is normal barometric pressure?

The highest ever recorded pressure on Earth was on December 31, 1968, at Agata Lake in Siberia, Russia when the weather conditions were clear and extremely cold at minus 50.8 degrees Fahrenheit. The recorded pressure was 108.38kPa / 1083.8 mbar / 812.92 mmHg / 32.01 inHg.Many people suffer from migraines and headaches that are associated with rising and falling barometric pressures. Low air pressure means that there is less weight pushing down and the air is rising and cooling, which means that there are clouds forming. High air pressures means that there is more weight pushing down and so the..

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What is a nucleus made of?

The nucleus of a cell is sometimes found near its center. A membrane surrounds it and separates it from the cytoplasm of the cell. The DNA that makes up part of the nucleus' chromatin is an enormous molecule that controls the living being's heredity. It does this by controlling the actions of proteins. DNA makes the instructions for every type of protein in the cell. These proteins are created in the cell's cytoplasm. They include enzymes that regulate chemical reactions in the cell. Though many chemical reactions can occur without enzymes, the enzymes speed them up. Other chemi..

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What is the boiling point of petrol?

The boiling point of petrol is shown to occur at these temperatures while it is heated within atmospheric pressure. Atmospheric pressure is the pressure in the surrounding air at Earth's sea level. This makes it the standard measurement of air pressure, as most experiments and scientific trials occur at or around Earth's surface. When altitude increases, the air pressure in the atmosphere also rises the higher its distance from sea-level. Atmospheric pressure is indicated by the measurement 0 degrees Celsius.

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What are some materials that muffle sound?

Many of the sound-proofing methods used in professional applications, such as recording studios, make use of porous, open-cell materials. The degree of sound absorption of these materials depends upon several factors, such as the size of the cells, the degree of porosity, material thickness and density. Cork is a popular material for sound proofing because the air that is contained within each cork cell enables it to absorb sound well. Overall, most of the porous materials work well in dampening the mid-range to high-frequency spectrum of sound, but the low frequency sounds tend to be those th..

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What animals and plants live in the desert?

In the hot deserts of North America, many plants like yucca, agave and prickly pear can grow. Ocotillo, also called Jacob's Staff, is another plant that is native to the Sonoran Desert of North America. A typical plant found in coastal deserts is black sage. Cold deserts, found in Greenland and Antarctica, have deciduous plants. The wildlife includes deer in winter and kangaroo rats.In desert regions like the Sahara, the camel is one type of animal that can live in this biome. The Sahara desert gets about a half an inch of rainfall per year.

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