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A vertebrate digestive system, as shown in the human.
Ground cover and colour such as shown here in (a) white sand
Two equivalent ways of drawing a phylogeny
Sprain. A sprain involves damage to one or more ligaments, and is categorized into three degrees of
Using Parallax to Determine Distance
The obese (ob) mouse mutant, shown on the left (a normal mouse is on the right), has provided many c