It seems that you forgot the answer choices, but lucky for you, I know the answer..
Answer: creating skin tissue by combining cells from different cell lines
Petrochemicals include many things, I would say All of the above. Hope this helped! :)
D. Lymph nodes are the filtering points throughout the body... found in the lymphatic system
Answer:
Explanation:
The two categories of the behavior includes the operant behavior and respondent behavior.
Operant behavior: The operant behavior can be define as the behavior that is under the control of the consequences. These consequences are likely to control the future frequency of behavior. For example, A child who is allowed to hit other children and take their toy, is likely to be aggressive to other people in the future.
Respondent Behavior: The behavior which is under the influence of a specific stimuli is a respondent behavior. For example, Snapping of hand away from a hot pan, and Salivation of the mouth due to food.
