Answer:
Anthracite: The highest rank of coal. It is a hard, brittle, and black lustrous coal, often referred to as hard coal, containing a high percentage of fixed carbon and a low percentage of volatile matter.
Bituminous: Bituminous coal is a middle rank coal between sub-bituminous and anthracite. Bituminous usually has a high heating (Btu) value and is the most common type of coal used in electricity generation in the United States. Bituminous coal appears shiny and smooth when you first see it, but look closer and you may see it has layers.
Sub-bituminous: Sub-bituminous coal is black in color and dull (not shiny), and has a higher heating value than lignite.
Lignite: Lignite coal, aka brown coal, is the lowest grade coal with the least concentration of carbon.
The circulatory system moves oxygenated blood to all parts of the body. Without oxygen being carried to cells they would die thus causing the animal to die.
According to the Kübler-Ross grief model, the stage following denial is anger.
The type of mutation seen is germline mutation
Answer:
Option (A) and (D).
Explanation:
Esophagus may be defined the long tube like structure that connect the throat with the stomach. The partially digested food from the buccal cavity to the stomach is pass down through the esophagus.
The mucosa of the esophagus contains the thick layer of the nonkeratinized squamnous epithelium. The smooth muscles are present in some layers only. The two layer of the muscle that are superior to the one third of the muscularis are the skeletal muscle.
Thus, the correct answer is option (A) and (D).
