Which of the following is a density-independent factor?
A) weather event
B) food availability
C) shelter availability
D) availability of mates
A
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Birds use specific songs, coloring, and mating dances to attract mates of their species (sexual selection). This is an example of reproductive isolation.
A. postzygotic B. parapatric C. sympatric D. prezygotic E. allopatric
__________ in annelids regulate the composition of body fluid. Fill in the blank(s) with the appropriate word(s)
Which option best describes the mechanism that causes a stoma to open?
A) K+ enters the guard cells and water follows passively, making the cells turgid. B) K+ activates water pumps in the guard cell membrane that make them turgid. C) K+ leaves the guard cells and water follows passively, making the cells flaccid. D) Loss of K+ from guard cells creates positive pressure and expands the guard cells.
Present evidence supporting the argument that Y chromosome STR profiling is not sufficient for proper DNA profiling
What will be an ideal response?