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Osmosis and Diffusion are two types of passive transport, which is the movement of a substance across a permeable barrier without the use of energy. Both processes occur in nature in the movement of atoms and molecules. Osmosis and diffusion also occurs with the body to maintain the equilibrium of substances within cells. This is called the concentration gradient. Substances naturally want to move from an area of high concentration to an area of low concentration. This makes the substance equal across the space.
The longest night of the year occurs on the same day as the winter solstice. This occurs when the Sun is at the southernmost point in the sky for the Northern Hemisphere and northernmost point for the Southern Hemisphere. The actual winter solstice lasts only a moment in time, but the day that it occurs is known as the longest night, shortest day, midwinter or first day of winter. The winter solstice marks the time when the nights become shorter and the days longer. It has been a significant event in many cultures throughout history. Let’s take a look at when it takes place.
Salami is a type of sausage that is usually prepared with a strong seasoning. It is thought to have originated in Italy and it became popular throughout Europe because it can be stored at room temperature safely. Today, it is available throughout the world where it is eaten on its own or added to a variety of dishes, such as pizza. There are a number of different varieties of salami and many of these developed in certain countries and regions of Europe. This means that the recipe for salami can be varied, but the main ingredients of the product remain the same.
Hawaii is a state of the United States that is made up entirely of islands. The island groups is located about 3,200 km (2000 mi) to the southwest of North America in the North Pacific Ocean. It became the 50th state of the U.S. in 1959 and before this time it was known as the Territory of Hawaii. Hawaii is made up of hundreds of islands spread out over approximately 2,400 km (1,500 mi). Continue reading to find out which one is the largest.
Chile is a country in South America that is located on the western side of the continent between the coastline and the Andes Mountains to the east. It is bordered by Peru, Bolivia and Argentina. Chile was once under Spanish rule, but the country achieved independence in 1844. Today, Chile is considered to be one of the most wealthy and stable nations in South America. It was a founding member of the Union of South American Nations and the United Nations. There are over 230 registered cities across the country, let’s find out which one is the capital.
The pituitary gland is a small pea-shaped organ that can be located at the base of the brain between the optic nerves. It is connected the rest of the brain via the hypothalamus. It secretes nine different hormones that assist in many bodily functions. The pituitary gland has a number of different functions. Continue reading to find out more.
The National Football League (NFL) is the highest professional league of American Football (gridiron) in the world. It is made up of 32 teams from the United States that are divided into two conferences, with 4 divisions in each conference. The regular season lasts 17 games, after which 6 teams from each conference enter the playoffs. These teams play a series of single elimination games, until the last 2 teams remaining playoff in the championship game, known as the Super Bowl. The NFL is an extremely competitive league and only once since the 1970 merger has a team gone undefeated through an entire season. Let’s take a look at the longest winning streaks in NFL history.
Spain is a country located in the south west of Europe. It is bordered by France, Andorra, Portugal and the British territory of Gibraltar. The unified country of Spain was formed in the 15th century and it became a global empire and world superpower. Although it’s strength has dwindled somewhat since this time, the country still plays an important part in world events as a member of the United Nations, European Union and NATO. Spain has over 20 cities with a population that exceeds 200,000, let’s take a look at which one is the capital city.
Each animal and plant in the world is made up of a collection of many cells. These cells have different functions that contribute to how an animal or plant functions. Plant and animal cells differ from each other in a number of ways. This is most probably due to the difference in their functions. So what are the differences between plant and animal cells? Read this article to find out.
The duodenum is the first, and shortest, section of the small intestine. This means that it is the first place that the partially digested food, called chyme, passes after it leaves the stomach. In humans, the duodenum is about 25-38 cm (10-15 in.) long and connects the stomach and the jejunum, which is the middle section of the small intestine. Let’s take a closer look at the function of the duodenum.