The specialized white blood cells called ____________________ have the job of attacking foreign substances, such as viruses and bacteria

Whether or not adults provide support to their adult children and to their elderly parents is most likely a function of ______

Fill in the blank with correct word

Professor Caine is running an experiment to determine if exercise affects memory retention. Two groups of participants are given the same list of 25 words and allowed 15 minutes to study them

Then one group sits idly in a classroom while the other participates in an hour-long aerobic work-out. After the work-out each group is tested in the classroom on the list of words. What is the independent variable in this study? a) the aerobic work-out b) the word list c) scores on the test d) time allowed to study