In exchange for these services the grasses offer ruminants a plentiful and exclusive supply of lunch. For cows have evolved the special ability to convert grass - which single-stomached creatures like us can't digest - into high-quality protein. They can do this because they possess what is surely the most highly evolved digestive organ in nature : the rumen.
PTELook at the text below. In 35 seconds, you must read this text aloud as naturally and clearly as possible. You have 35 seconds to read aloud.
Recorded Answer
Current status:
Beginning in 35 seconds.