There is no evidence in the geologic record that multicelled organisms of any kind existed prior
to the Cambrian. Indicate whether the statement is true or false.
F
Environmental & Atmospheric Sciences
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What is the smallest size class of plankton?
a. microplankton b. nanoplankton c. femtoplankton d. picoplankton e. mesoplankton
Environmental & Atmospheric Sciences
When freight cars collide, momentum is conserved in
A. elastic collisions. B. inelastic collisions. C. both of these D. none of the above
Environmental & Atmospheric Sciences
Which of the following clouds will produce rain?
a. stratocumulus b. altostratus c. cirrocumulus d. nimbostratus
Environmental & Atmospheric Sciences
According to the following reaction, which molecule is acting as an acid?H3O+ + HSO4- ? H2O + H2SO4
A.
| H2SO4 |
B. H2O
C. H3O+
D. HSO4-
E. none of the above
Environmental & Atmospheric Sciences