1. If the nitrate concentration increases from 6uM at 500m depth to 17uM at 1,000m depth, by how much, and in what way, would you predict the phosphate concentration to change over the same depth interval? Assume that the Redfield ratio is 106:16:1
Increase by 0.69
Increase by 1.45
Decrease by 0.69
Decrease by 1.45
1 of 10
Other questions in this quiz
2. What is the definition of remineralisation?
The uptake of nutrients and other dissolved materials by phytoplankton.
The transfer of matter as a result of molecular motion.
The dissolution of "hard parts" (opal, calcite) or the oxidation (breakdown) of "soft part" (organic matter) that leads to the solubilisation of nutrients
Formation of solids from dissolved materials
3. What is the main dissolved constituent that is used to breakdown organic matter during bacterial respiration?
Phosphate
Oxygen
Water
Nitrate
4. 10 The dissolved constituents chloride, sodium, sulphate, magnesium, calcium and potassium account for what per cent (%) of the dissolved constituents in seawater?
Greater than 99%
Greater than 95%
Greater than 80%
Greater than 90%
5. Which one of these has NOT been shown to exhibit HNLC behaviour
Comments
No comments have yet been made