GO TO THIS SITE AND THEN CHOOSE A TOPIC RELATED TO BIOLOGY TO LISTEN TO. BY TOPIC THE SEGMENTS ARE SHORTER SO YOU NEED TO LISTEN TO TWO SEGMENTS AND WRITE IT UP ACCORDINGLY
http://www.kidsnet.org/sfkc/
look under the topic section
choose topic
click on it!
then when it gets to the next page click on the left hand side of the section of the table that says "click here to go to the resource that relates to this benchmark"
click on the first link next to the part that say "science friday program"
Finally click on the purple tab at the top that says "Hear the program"
click on the windows media to listen ( if that is what you have) and then--ENJOY!