1. my head
    Joined
    03 Oct '03
    Moves
    671
    26 Jul '06 03:09
    Originally posted by ckoh1965
    There is this type of leaf that grows on the surface of a pond. It happens that the leaf multiplies every 24 hours. Therefore 1 becomes 2 the next day; then becomes 4 after the second day; becoming 8 the day after and so on and so forth.

    Now it has been determined that it takes 40 days to cover up the whole surface of the pond if we start day 1 with one ...[text shortened]... this time with 2 leaves on day 1. How long does it take to cover the entire surface of the pond?
    it's called duckweed, altough there may be different species, in which case one would want to check their reporductive rates to see which is in question here.
    but duckweed is the only surface-ridding plant i know.
  2. Standard memberAThousandYoung
    or different places
    tinyurl.com/2tp8tyx8
    Joined
    23 Aug '04
    Moves
    26660
    30 Jul '06 23:18
    Originally posted by fearlessleader
    it's called duckweed, altough there may be different species, in which case one would want to check their reporductive rates to see which is in question here.
    but duckweed is the only surface-ridding plant i know.
    Lilies.
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