By pairing the ringing of a bell with the presentation of meat, the russian physiologist trained dogs to salivate at the sound of a bell even when no meat was presented.

Select the correct answer mike tells his teacher that he fears wetting his bed and feels that he should run away from home. what could be the probable cause of mike's fears? a mike could be throwing a tantrum. b. mike could be facing abuse from his parents. c. mike could be disobedient. d. mike could be neglected by his parents

Antibiotics are given when an std is caused by a virus. true or false

Which of the following does not cause blindness? a. cataractsb. glaucomac. osteoarthritisd. diabetes