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Some male birds and mammals congregate in communal courting grounds called leks.
Older adults may grieve intensely over the loss of a person or situation that has been a part of the
Cerebral angiography. The four angiograms each reveal the distribution of blood vessels supplying th
W. A. Rogers’s engraving, “Out of the Game,” showed one injured boy tending to another. It appeared
If we make the substitution z=sqrt(x) to ∫sqrt(1-sqrt(x)) dx, the resulting integral is
The synapse and synaptic transmission. (a) A thin cleft, called the synapse, separates one cell from