Mitosis is the process of cell division that results in two cells identical to the original parent cell. Mitosis is made up of multiple stages that are characterized by the position of the chromosomes inside the cells. Interphase is the stage the cell is in when it is not undergoing mitosis. The cell undergoes normal ...
African lions, panthera leo, are often called “the king of the jungle”, and for good reason. They measure anywhere from 4.5 to 8 feet (1.4 to 2.5 meters) in length, and stand from 3.5 to 4 feet (1 to 1.2 meters) tall at the shoulders. They weigh 265 to 550 pounds (120 to 250 kilograms) ...
Imagine that the sun is rising on beautiful day in our not-so-distant future. A myriad of colors are glimmering on the soft ripples of the ocean. Although the day seems near perfect, the sea is suffering. Several fish species have gone extinct and most fishermen are out of work. Economies that once depended on seafood ...
While many people are mesmerized by the idea of witnessing a volcanic eruption, the rising column of smoke and ash coupled with the glow of fiery rocks and lava pale in comparison to the event that happens as a result of the eruption. The real danger is what is not normally seen in the news ...
Arctic foxes, alopex lagopus or vulpes lagopus, are the only native land mammals within their range. Their heads and bodies measure 1.5 to 3.5 feet (0.45 to 1.1. meters) in length, with their tails adding an additional 12 to 13.75 inches (30 to 35 centimeters). At shoulder height, they stand 9 to 12 inches (23 ...
There’s a lot to admire about the honey bee. They are often seen a symbol of an industrious good work ethic, as exemplified in the phrase “busy as a bee.” Of course, bees can also be deadly, a single bee sting in a person allergic to bees could result in a life threatening condition called ...
The generic name tropical storm is applied to typhoons, cyclones and hurricanes. These storms form over tropical waters in the Atlantic, Pacific and Indian Oceans. In order for a tropical storm to form several different factors must come together. The water must be over 28C (80F) and deep enough to provide the energy needed to ...
Trees are composed of organic compounds: substances with a skeleton of carbon atoms, with which hydrogen and oxygen atoms are united. In many compounds, a few other elements are also present, such as the nitrogen and the phosphorous in DNA molecules and magnesium in chlorophyll molecules. And of course, a healthy tree has plenty of ...
I’ve been a professional organic chemist for over ten years, and one of the most exciting developments I’ve seen during that time was the discovery of graphene. Graphene (not to be confused with graphite) is a thin molecular sheet made entirely from carbon molecules. The compound resembles a flat layer of hexagons, all fused to ...
Because the sun is obviously the star closest to the Earth, it is often excluded from lists of stars near our planet, with lists beginning with Proxima Centauri or the second closest star to the Earth. Following this tradition and excluding the sun, three stars closest to the Earth technically consist of two stars, the ...
