The commonest form of the Carbon atom that exists is at times referred to as C12 . An isotope of this atom is called C14 . C14 must have a different number of___________than C12
a. Ions
b. Protons
c. Atoms
d. Neutrons
e. Electrons
D
Environmental & Atmospheric Sciences
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What is a region in the atmosphere where air temperature remains constant with height?
A) temperature inversion B) jet stream C) isothermal zone D) hypoxic zone
Environmental & Atmospheric Sciences
The H+ and electrons which combine with the oxygen we breathe to form water are provided by which of the following?
A) only FADH2 B) only NADH C) both FADH2 and NADH D) neither FADH2 nor NADH
Environmental & Atmospheric Sciences
The diagram below illustrates the process of
A) regelation.
B) eutrophication.
C) carbonation.
D) illuviation.
Environmental & Atmospheric Sciences
The masses of stars are found by measurements of
A. relative sizes. B. light intensity. C. Doppler shifting. D. binaries. E. temperature.
Environmental & Atmospheric Sciences