Which of the following is true of hyaluronic acid?
A) It is an oligosaccharide.
B) It has a formula weight of 1 x 10^5 g/mol.
C) It has a formula weight of 1 x 10^7 g/mol.
D) It has a large range of formula weights, from of 1 x 10^5 to 1 x 10^7 g/mol.
D
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The ___ is the temperature at which a parcel of air would need to be cooled in order to reach saturation
Fill in the blank(s) with correct word
What is a fossil assemblage?
A) A fossil that is geographically widespread but limited to a short span of geologic time B) A fossil that is very common and existed for a long period of geologic time C) A group of fossils used to establish the age of a rock unit D) Fossil organisms that have survived multiple geologic eras
A valley glacier that ________ will tend to move faster than one that does not.
A. is in a very cold climate B. has a thin film of water at its base C. flows over a rough surface D. flows over a low-gradient surface
The term "flood-frequency curve", though in common use, may be misleading in that it implies that floods of certain sizes recur at regular intervals.
Answer the following statement true (T) or false (F)