What is also a byproduct of the coal mining process

A: dirt for construction
B: Toxic sludge that poisons the water supply
C: Rare metals
D: There are no other byproducts

Urgent. the table shows the relative blood flow through some organs in the human body that is, the percentage of blood that flows through a given organ, through which organ(s) does all the blood flow? explain the effect of exercise on blood flow to skeletal muscles.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Nh3 +02-no + h20 is unbalanced what is the balanced equation