01002cam a2200265 4500 62117112 TxAuBib 20010725120000.0 010725s1982||||||||||||||||||||||||eng|u 82009442 9780516005072 0516005073 DLC DLC DLC TxAuBib Challand, Helen J. Activities in the life sciences / by Helen Challand ; illustrated by Len Meents. Chicago, [IL : Childrens Press, 1982. 91 p. : ill. ; 24 cm. Includes index. Presents a variety of experiments involving living organisms, including growing bacterial cultures, calculating the rate of seed germination, regenerating animals, and using urinalysis techniques. 20010725. Biology Experiments Juvenile literature. Biology Experiments. Experiments. Meents, Len W., ill.