Paul’s company commissioned some geological studies on some undeveloped arable land. the studies found coal deposits but they were estimated to lie at around one thousand feet or more below the surface. what type of coal did they find? lignite anthracite bituminous subbituminous

The correct answer is option C, Bituminous

Bituminous coal is found usually at the depth of 8,500  and it extends to much greater depths up to 20,000 feet below the earths surface. Lignite is found at shallow depths  

However the depth of burial of coal is as follows –  

a)Lignite – upto 4921 feet

b)Sub Bituminous – 4921 feet to 8202.1 feet

c)Bituminous -  8202.1 feet to 19685 feet

d)Anthracite – Greater than 19685 feet  

it has to be understood that the sea water contains a huge amount of sodium and chlorine ions and if they enter the cell of the atlantic cod fish, the cell will shrivel and the fish will die. to avoid such a condition, the fish uses active transport for the purpose of removing the ions against the gradient.

explanation:

the atlantic cod is not a maritime osmoconformer. its native application of salts is less than that of the seawater it lives in. it is continually falling water from the gills to the ocean via osmosis.

countering that, the fish is going to be swallowing seawater. but since its internal collection of salts is lower than seawater, the fish will want to go free of excess salt, and since that's going upon a gradient, then active transport, requiring energy, must be used to pump out the salt. much marine fish use the organs to filter out the salt and these fish discharge very straight urine.

is this a question? wassup