Sam drives an excavator at an open surface strip coal mine. Which type of coal is he most likely to collect closest to the surface? A. anthracite
B. subbituminous
C. lignite
D. bituminous
E. pitchblende

Coal i believe hope this

Standing in the sunlight and feeling the heat on your face (uv radiation is entering the skin, converting to infrared radiation, and is absorbed by your tissues)orstanding near a fire and feeling the heat on your skin (infrared radiation transfer)

A. ​it generates energy from carbohydrates.b. it requires activation by oxygen.​c. ​it is used by cells to dispose of excess electrons

Self-ionizes to form an equilibruium system in which [ h_{3} o^{+} ]=[ oh^{-} ]=10^{-7} m