A hot spot is an area in the mantle of the earth where heat increases during the convection phase. This heat makes it easier for rock to melt. The melted lava, known as magma, drives volcanoes into cracks in the crust. There was a mistake. It does happen instead in abnormally hot centers called mantle feathers.
The inside surface area is shaped in a crescent. It consists of a spiral valve which is made up of the small intestine. Although the dogfish shark has a relatively short small intestine compared to other animals, therefore, the spiral valve allows for a more compact form of the small intestine.
Hence, this structure provides maximum surface area over a relatively short distance in order to make the absorption of nutrients efficient achieved from the food, the sharks had from eating different sea animals.
Molecule, organelle, cell, tissue, organ, organ system, organism, community, population, ecosystem, biosphere
No; some mice may have developed lung cancer in less than 500 days of cigarette smoke exposure.
<span>Centrosomes are made of from arrangement of two barrel-shaped clusters of microtubules, called “centrioles,” and a complex of proteins that help additional microtubules to form.</span>