Which of the following statements about the physical environment of the deep-ocean is incorrect?
A) Below 1500 meters, light is present but in low concentrations.
B) Oxygen content at the deep-ocean floor is constant and relatively high.
C) The physical environment is comparable to that at the surface.
D) The physical environment is quite unstable and high variable.
E) The temperature rarely exceeds 0°C at the deep-ocean floor.
E
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?Which statement is true of sediments in the ocean?
a. Biogenous sediments comprise a larger area than terrigenous sediments.
b. Terrigenous sediments comprise a larger area than biogenous sediments.
c. Hydrogenous sediments cover more volume than biogenous sediments.
d. Cosmogenous sediments cover more volume than biogenous sediments.
e. Terrigenous and biogenous sediments are equal in area and volume.
________ is least available to plants because it is held in chemical combination with the minerals in the soil
A) Free water B) Capillary water C) Combined water D) Hygroscopic water E) Gravitational water
A natural process characterized by a(n) _______________ effect will change in a way that causes a rapid increase in the rate of subsequent change.?
Fill in the blank with correct word.
How many amino acids make up substance P?
A) 5 B) 7 C) 9 D) 11