Document page
biology 0610printed 123 · PDF 123
328 pagesrevision 46933
printed 123 · PDF 123
Page image rendered from the stored file at 110 dpi; it sharpens as you zoom. Outlines are placed from each region’s stored position on the page (612 × 792 pt).
readable
Source of this text: embedded text layer. The better of the embedded text and OCR is kept.
123
2.
i)
Blood flows through heart twice to reach the same point, one loop goes to lungs
and one to rest of the body.
ii)
It Allows animals to have high metabolic rates and facilitates transport of
nutrients quicker