Discuss the environmental conditions required for the formation of organic reefs. What will be an ideal response?
Organic reefs commonly form in marine environments that are distinguished by relatively
shallow water, clear (photosynthesis), warm, low sedimentation (non-abrasive) waters.
Epeiric seas are very good places for organic reefs to form. Temperature conditions, in many
cases, are moderate and organic reefs are more abundant in tropical areas.
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What is the lowest level that sediment from a mountain can be transported to?
A) the bottom of a stream channel B) sea level C) the bottom of the sea D) Earth's core
What circumstance would decrease the likelihood of a couple having a child?
A. the use of children as an essential part of the family labor force B. lack of contraceptive availability C. opportunities for women to participate in education and employment D. the lack of a public or private pension system E. high infant mortality rates
Heap-leach extraction involves piling crushed ore into large piles and spraying it with ________________.
A) an alkaline-cyanide solution B) concentrated salt water C) high-pressure steam D) giant sandblasters E) none of these are correct.
Regions come in many scales
Indicate whether this statement is true or false.