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.
Western European nations maintained democratic political systems.
Explanation:
For the specified objectives, demographic training is important in the education system: it is mindful of the cultural and ecological factors and effects of population density. It conveys awareness and alters people's thoughts and actions towards the community.
Answer:
A. Personality
Explanation:
Personality development is the advance of different conducts and attitudes that sets a person apart from others. This takes place thanks to the constant interaction of three factors: character, temperament, and the environment. These (and in some cases genetics) influence how a person interacts with the world he/she lives in.
