What has Piaget been categorized as?

Dr. Harriet found a fossil in the desert. Back at her lab, she had a very difficult time determining if it was primate or hominid in origin. This is because the fossil probably dated back ________ years

a. 1 million b. 2 million c. 6 million d. 10 million

Theresa has a phobia of insects and is undergoing a therapeutic technique in which she will be gradually exposed to the phobic stimuli of insects while she remains calm and relaxed. This therapeutic technique is called

Fill in the blank with correct word