Multicelled organisms first appeared in the fossil record about 4.0 billion years ago
a. True
b. False
False
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A strong trough in a Rossby wave occurs when the jet stream
A) bends away from the poles. B) bends toward the poles. C) does not bend but maintains an east to west flow. D) does not bend but maintains a west to east flow.
The crop of the Assam Hills is
A. rice B. wheat C. tea D. sugar
What would you name the following metamorphic rocks?
• Foliated rock with alternating compositional bands rich in quartz and feldspar or biotite, garnet, and sillimanite • Shiny, foliated rock rich in muscovite and biotite, with numerous crystals of coarse-grained garnet • Weakly foliated rock consisting entirely of coarse-grained recrystallized calcite • Weakly foliated rock consisting entirely of fine-grained recrystallized quartz • Non-foliated green rock consisting of quartz, feldspar, chlorite, and amphibole What will be an ideal response?
In the reaction CH2O(g) + O2(g) ? HCOOH(g) + H2O(g) which species is oxidized?
A) CH2O(g) B) O2(g) C) HCOOH(g) D) H2O(g)