Science


Refine Search

How long does digestion take?

After entering the stomach and small intestine, the food enters the large intestine where it absorbs water and begins eliminating waste. Food stays in the large intestine the longest amount of time. It can take up to 40 hours for the food to pass through the intestine. In children, it takes around 33 hours for the entire digestion process to take place according to the Mayo Clinic.

From where does the articular cartilage obtain oxygen and nutrients?

Chondrocytes are the principal cells in articular cartilage and are formed from mesenchymal stem cells. They are suspended in their own matrix and are responsible for the regeneration and maintenance within their own microenvironment. Their poor ability to replicate explains the low healing capacity of articular cartilage, notes Sports Health.\nArticular cartilage is composed of 80 percent water by weight. About 30 percent of this water is distributed in the intrafibrillar space and the rest is contained within the pores of the matrix. The distribution of water in these areas is considered one..

What is a good slogan for cobalt?

Slogans for elements like cobalt can be seen as being similar to poetry about the element. For example, this haiku about cobalt discusses its use and its unique pigment: "Shiny surfaces/ Porcelain, glass, pottery, tile/ Beautiful dark blue." This haiku references the fact that cobalt is used as a pigment in creating different artistic products, but this isn't the only thing that cobalt is known for. Cobalt is also used in the manufacture of metal alloys that are used in the aviation manufacturing sector thanks to its resistance to corrosion. Magnets made with cobalt are used for everythin..

What types of plants are in the Sahara Desert?

Due to the lack of water, very few plants are able to sustain life in the Sahara. A few flowering plants pop up when the area sees rain, but they die off within a few days.The Sahara Desert is home to animals such as sheep and fox. Reptiles and birds are also found in the area. The animals often dig burrows to stay out of the sun during the daylight and come out in the open at night to hunt.

What sort of substance can you put on a sidewalk to make ice melt?

De-icers are typically made from one or a blend of the following products: calcium chloride, potassium chloride, sodium chloride, urea and calcium magnesium acetate. Calcium chloride is a traditional choice for melting ice and works until temperatures reach minus 25 degrees Fahrenheit. Potassium chloride works well mixed with rock salt to a temperature as low as 12 degrees Fahrenheit. Urea melts ice until temperatures reach 15 degrees Fahrenheit. Calcium magnesium acetate, made from dolomitic limestone and acetic acid, works well in melting ice.

What is the difference between global warming and the greenhouse effect?

Greenhouse gases contribute to global warming. What is determined to be a greenhouse gas is any heat-trapping gas present in the Earth's atmosphere. The two most common greenhouse gases are water vapor and carbon. These gases help absorb infrared radiation and regulate the Earth's climate.\nHowever, the increase in industrial production has increased the amount of greenhouse gases present in the atmosphere. The increase in carbon dioxide emissions has made it difficult for heat to escape the atmosphere. Heat enters the atmosphere through short wave radiation, heats the surface and ex..

Which unit of measurement is most appropriate for measuring the width of a room?

The width and the length of a room is used to measure the total area of the room. If the room is rectangular, the width measured in yards or feet is multiplied by the height measured in the same unit; this produces the area of the room in square yards or square feet. Another appropriate unit for measuring the width of a room is meters.

How to wake up someone from deep sleep?

Call out and speak to the personEnter the room, take off the person's blanket and call her name with a low tone, asking her to wake up. Shake her gently as you call, but do not shout. To avoid getting hit in case she wakes up abruptly, keep your face from the person at a safe distance. Uncover the person to reduce comfort, which encourages the waking process.\nHelp the person sit up\nAfter waking the sleeping individual, help her sit up. State a specific reason that she needs to be awake. Leave the room to allow her to prepare and get out of bed. Some people may not be comfortable getting..

What cellular structures in plants are involved in producing more cells?

Cells are the fundamental units of life that carry out vital processes to sustain the continued survival of an organism. Multicellular organisms, including plants and animals, consist of compartmentalized structures called organelles that perform highly specialized functions. Some organelles that are present in plant and animal cells include mitochondria, Golgi body, ribosomes, endoplasmic reticulum and nucleus. Plant cells contain cell walls and chloroplasts, which are both lacking in animal cells.Cells typically undergo mitosis for the organism to grow and develop. Rather than increase in si..

Did Louis Pasteur have any brothers or sisters?

According to NNDB, Louis Pasteur's brother, Jean Denis, was born in 1816 and passed away in 1817. His older sister, Jeanne Antoine, was born in 1818 and died in 1880. His two younger sisters were Joséphine, who was born in 1825 and died in 1850, and Jeanne Emilie, who was born in 1826 and died in 1853.\nLouis Pasteur was the middle child, having been born in 1822. He also outlived all his siblings, passing away in 1895.

Showing 6821 to 6830 of 10000 (1000 Pages)