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.
Transportation is a way to move positions.
Explanation:
It would have had to be false because thats not true i hope this works.
The choice that best explains why deforestation increases
the risk of floods in an area is letter D: Tree roots improve soil water
retention. Tree roots’ function is to absorb the water from the soil because it
uses this water as his food to sustain its plant functions.
