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.
Answer: It is used to show the force between two objects caused by gravity.
Explanation: The gravitational constant appears in Isaac Newton's universal law of gravitation.
{\displaystyle G}{\displaystyle G} is about 6.67430×10−11 N⋅m2/kg2,[1] and is denoted by letter G
The last place you left it! :)
It traps the heat in instead of letting it out into space. For this reason CO2 is a greenhouse gas.
Answer:
Explanation:
New Zealand is located in one of the most tectonically active regions of the world, the pacific ring of fire.
Volcanic activities is produced from uprising magma through the earth. They usually occur around plate boundaries on the surface of the earth.
New Zealand sits around an area where the Pacific plate subducts under the Indo-Australian plate. As the subduction occurs, the rocks beneath undergoes partial melting leading to the formation of magma. The magma reaches the surface in landward regions away from the subduction margins and series of volcanic arcs can form. These series of volcanoes typifies the tectonic setting of New Zealand and it is responsible for the vast volcanic activity in the region.