Why is photosynthesis inhibited at the very top layer of the ocean surface?
a. The salinity is too low
b. There is too much light
c. There are pollutants in the water
d. There are too many plankton in the water
ANS: B
Photosynthesis occurs in the euphotic zone. It can be limited by the lack of light but also the
overexposure to light. It overwhelms the photosynthetic chemistry of some autotrophs. Information
can be found in the section Lack of Nutrients and Light can Limit Primary Productivity.
You might also like to view...
Pressurized fluid and chemicals injected into a well are used in a mining process called ________.
A. High pressure welling B. Heap-leach extraction C. Hydraulic fracturing D. Placer mining
A permeable layer that transports water is called a(n) ____________________. Fill in the blank(s) with the appropriate word(s)
Which of the following is true of pathways by which energy is extracted from carbohydrates and glycerol?
A) They are both glycolysis pathways, but are different from one another. B) They are the same as one another. C) The pathway for carbohydrates does not involve glycolysis, but that for glycerol does. D) The pathway for glycerol does not involve glycolysis, but that for carbohydrates does.
The South American continent falls within the zoogeographic ________ region
A) Nearctic B) Palearctic C) Ethiopian D) Neotropical E) Phreatic