Words

1.hormone
a chemical substance produced by your body that influences its growth, development, and condition

Ex:  Antibiotics and hormones used in human drugs have 

        been detected in drinking water and our rivers.

2.mammal

any animal of which the female feeds her young on milk from her own body.
Ex:  Humans, dogs, elephants, and dolphins are all 

        mammals, but birds, fish, and crocodiles are not.



3.circumstance

a fact or event that makes a situation the way it is.

Ex:   Obviously we can't deal with the problem until we know 

         all the circumstances.



4.complicated

involving a lot of different parts, in a way that is difficult to understand.

Ex:  Our lawyer guided us through the more complicated 

        questions on the form.