Due to the effects of drugs causing behavioural abnormalities, many scientists suggest a theory that "substance may due to operant conditioning." Substance abuse has been one of the hot topics in our society nowadays. For example is the use of cannabis, which is known to be an effective treatment for several ailments, are abused by other people which could mentally impair them.
Answer:
These factors are birth rate, death rate, and migration.
Explanation:
<em>hope</em><em> </em><em>it'll help you</em><em>.</em><em>.</em><em>.</em>
Answer: D
Explanation: The white house construction started in 1972
