Is making gunpowder dangerous? Gunpowder was invented by Chinese alchemists in the 9th century. When the ingredients were carefully ground together, the end result was a powder that was called “serpentine.” The ingredients tended to require remixing prior to use, so making gunpowder was very dangerous. What causes gunpowder to explode? What makes gunpowder seem […]
What bacteria can grow on Cetrimide Agar?
What bacteria can grow on Cetrimide Agar? Cetrimide agar is a type of agar used for the selective isolation of the gram-negative bacterium, Pseudomonas aeruginosa. As the name suggests, it contains cetrimide, which is the selective agent against alternate microbial flora. What do you conclude from the absence of growth on Cetrimide Agar? Lack of […]
What environment do foxes live in?
What environment do foxes live in? Red foxes live around the world in many diverse habitats including forests, grasslands, mountains, and deserts. They also adapt well to human environments such as farms, suburban areas, and even large communities. The red fox’s resourcefulness has earned it a legendary reputation for intelligence and cunning. Do silver foxes […]
What type of sewing machine do you need to sew leather?
What type of sewing machine do you need to sew leather? The Singer Sew mate 5400 is one of the most recommended machines for leather tailors. Thanks to its computerized systems, it’s very convenient to use. It is also very lightweight and portable. Many consider it the definition of power and convenience. Can a normal […]
What are 5 examples of omnivores?
What are 5 examples of omnivores? Examples of omnivores include bears, birds, dogs, raccoons, foxes, certain insects, and even humans. Animals that hunt other animals are known as predators, while those that are hunted are known as prey. Since omnivores hunt and are hunted, they can be both predators and prey. What carnivores are in […]
What subjects do you need to be a sports journalist?
What subjects do you need to be a sports journalist? A bachelor’s degree in journalism, English, communications or a closely related major is a necessary first step for prospective sports journalists. Such a degree program provides a foundation in writing, reading, critical thinking and other skills necessary for journalists. How do I get into sports […]
What is the history of the hammer throw?
What is the history of the hammer throw? Hammer throwing was practiced during festivals honoring the god Thor in the ancient Teutonic tribes. In the 15th- and 16th-century, Scotland and England practiced sledgehammer throwing. The hammer throw has been a part of track and field competitions in England, Scotland, and Ireland since 1866. When was […]
What currency was introduced in 1999 and is the official currency of 19 EU nations?
What currency was introduced in 1999 and is the official currency of 19 EU nations? The euro What was the value of the euro in 1999? €100.00 What were the economic and political reasons behind the creation of the euro in 1999? On January 1, 1999, the European Union introduced its new currency, the euro. […]
How do hippos prevent sunburn?
How do hippos prevent sunburn? Hippos can stand in the hot sun all day without getting a sunburn, and now researchers know why: a red-colored glandular secretion known as “hippo sweat” contains microscopic structures that scatter light, protecting the hefty mammals from burns. The sweat was transferred to sealed plastic containers. In which ways skin […]