“Okay,” he whispered to the room. “Active transport. Moving particles from low to high concentration. Needs energy. Like pushing a boulder uphill instead of letting it roll down.”
He remembered the last time. A few weeks ago, he’d found a PDF for an earlier unit—complete, every page, every “Check Your Understanding” question answered in neat, official-looking text. He’d copied three answers verbatim. His teacher, Ms. Kaur, had written in red ink across the top: “Great answers, Leo. But next time, use your own words. Come see me.” exploring science 9 student book answers pdf
Leo had two problems. First, he didn’t know the answer. Second, he knew exactly where to look. “Okay,” he whispered to the room