Answer:
B. Aerobic bottom water
D. High organic productivity in the overlying oxygen rich water
Explanation:
A Shale is a sedimentary rock usually formed from silt and clay-size mineral. There are different colors of Shale. The Black Shale is formed under anaerobic conditions. This means that oxygen is deficient in the water where the Shale forms.
A little amount of organic materials is required for the formation of Black Shale and because Black Shale is formed in an environment lacking oxygen, an oxygen-rich water would not be necessary for its growth. Sediments are necessary in the formation of Black Shale.
I think its c because coal isnt considered a mineral/rock because it is organic(?)
There are Alps Balkan Peninsula, Liberian Peninsula, Danube River, and the Northern European lowlands. Hope this Helps :)
Deforested landscapes with clay soils!! this is the answer word for word. rate if I helped please (:
