Sophia gets rewarded with praise from her teacher anytime she raises her hand in school. The praise reinforces the desired actions (boosting her hand prior to speaking). SMART Vocabulary: relevant phrases and phrases Substances, chemical compounds & gases acetic acid acrolein acrylamide activated charcoal adenine agglomerate cyanide ethyl alcohol glyphosate https://hvac99753.wikinewspaper.com/3163005/article_under_review