Does take two sperm make twins? How did it happen? Identical, or monozygotic, twins occur when a single egg, fertilised by a single sperm, divides and makes two babies. If one egg is fertilised by two sperm, it results in three sets of chromosomes, rather than the standard two – one from the mother and […]
What did the Jolly Roger flag mean?
What did the Jolly Roger flag mean? Jolly Roger is the traditional English name for the flags flown to identify a pirate ship about to attack, during the early 18th century (the later part of the Golden Age of Piracy). It went on to become the most commonly used pirate flag during the 1720s, although […]
How does the loss of habitat lead to the extinction of species?
How does the loss of habitat lead to the extinction of species? Habitats are usually lost due to human activity, such as building roads or clear-cutting a forest. After such a disturbance, the habitat can no longer support the number of species that live there and species begin to disappear until the habitat reaches a […]
What happened to the amount of oil imported by our country from 1980 to 2010?
What happened to the amount of oil imported by our country from 1980 to 2010? North America’s crude oil production decreased about 1 million bbl/d between 1980 and 2010—the only region with declining crude oil production. As a result, North America’s share of global growing oil production fell from 20% in 1980 to 15% in […]
What is James Buchanan known for?
What is James Buchanan known for? What is James Buchanan most known for? James Buchanan is most famous for being the last president before the start of the Civil War. Although he tried to prevent war, many of his policies ended up dividing the Union even further. James was born in a log cabin in […]
What do I do if I find a seagull egg?
What makes paintball gun more accurate?
What makes paintball gun more accurate? The length of the barrel is at the top of the list when a marker’s accuracy is determined. Stock markers tend to come with a barrel length of 8.5 inches. Upgrading to a longer barrel will bring increased accuracy simply because it will be easier to aim. Increased contact […]
Can I take my tablet on a plane?
Where was the aerosol invented?
Where was the aerosol invented? Norway What was the first aerosol used for? The first use for an aerosol package arose during World War II, but the idea of using low-pressure liquefied gas to atomize droplets of liquid in the air was developed in 1924. Canisters filled with insecticide and propellants were used to protect […]