Which of the following contains two species which have the same mass number?
A) 14C, 14N
B) 12C, 13C
C) both a and b
D) neither a nor b
A
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Marine snow refers to
a. appearance of the water during freezing weather b. animal and plant plankton that die and drift downward c. white sand beaches d. algal blooms e. weather over the Arctic that contributes to the ice pack
The present weather depicted by this station model is
A) light snow. B) light rain. C) moderate rain. D) heavy rain.
Granite is ________
A) fine-grained and dominated olivine, pyroxene and plagioclase feldspar crystals B) coarse-grained and dominated by quartz and feldspar crystals C) coarse-grained and dominated by olivine, pyroxene and plagioclase feldspar crystals D) fine-grained and dominated by quartz and feldspar crystals
The process of ________ allows organisms to use inorganic molecules as an energy source.
A. cellular respiration B. photosynthesis C. chemosynthesis D. phosphorylation