1.  At first the growth of a child is dictated by biological needs.

2.  Which suggests that the life patterns imposed on infants in fact derive from biological need.

3.  Most young women feel a biological need to procreate.

4.  Even after she married Ken Kimes, she had the biological need to live on the wrong side of the law.

5.  How lunch came to be has to do more with class, gender and nationality than with the biological need to eat.

6.  Napping is an essential biological need, experts say.

7.  Thanks to this marriage between technical skill and biological need, new instrument-makers are sprouting up in the South Bay.

8.  The cuddling response apparently grew from the biological need for humans to protect and nurture their helpless infants.