1 and D
2 and A
3 and C
4 and B
Question
Mid-ocean ridges are steeper and less broad than rises because:
Group of answer choices
A) the rocks of the mid-ocean ridges are composed of more dense mineral than the rises.
B) the rocks of the mid-ocean ridges are composed of less dense mineral than the rises.
C) The seafloor spreading rate of ridges are faster than rises causing the oceanic crust to subside closer to the ridge axis.
D) The seafloor spreading rate of ridges are slower than rises causing the oceanic crust to subside closer to the ridge axis.
E) Every ridge is composed of continental crust.
Answer:
The correct answer is D.
Explanation:
In volcanic regions, as the molten magma flows out onto the seafloor creating new beds, the faster it flows, the less steep the mid-ocean ridge is. If however, it is slow-flowing, then oceanic lithosphere formed cool closer to the ridge axis thus making it very steep.
Cheers!
The ancient Egyptian noblemen usually would be very busy with their daily appointments with overseers of their much treasured land. However, music played a vital role in their lives. To pass time, they threw lavish parties. Consumption of beer, wine, and narcotics was common.
They also spent their leisure time in their own gardens next to their houses like people do today. They could go outside and relax. They also loved to over-stuff themselves and enjoy a good laugh. Fishing was also done at their free time and would go severally to river Nile. Most of the fishing was enjoyed as a timeout from hard work. They also hunted for sport. Noblemen caught wild animals.
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.
