The Calcite Compensation Depth (CCD) is the depth in the ocean ...

[pane00]

The Calcite Compensation Depth (CCD) is the depth in the ocean where _________ equals _________.
 
  a) Acidity; dissolution potential
  b) Temperature; the dissolution point
  c) carbonate saturation; carbonate undersaturation
  d) carbonate dissolution; carbonate supply
  e) Lysocline; thermocline

Question 2

Why is quartz one of the most abundant constituents of lithogenous sediments?
 
  a) Quartz is composed of silica, which is common in continental rocks.
  b) Quartz is formed in the arid environments of deserts, which only occur on land.
  c) Quartz is one of the most durable minerals in continental rocks, so it resists weathering.
  d) Quartz grains come from continental mountain belts.
  e) Quartz is heavier than most other minerals, so it tends to be concentrated in lithogenous deposits.

[ghepp]

Answer to Question 1

D

Answer to Question 2

C

[pane00]

Wow, this really help

[abro1885]

Gracias!