After getting changed, Sam had settled right next to where Genny was perched, giving the Gryffindor a wide smile as she tugged on the too long sleeves of whatever this outfit was supposed to be. It resembled what muggle building repair men wore, and she couldn't think why they'd need to be doing plumbing exercises in a combined Herbology and Astronomy course.

Starting to roll up her sleeves, she thought about Flamsteed's question. It wasn't an easy one, for her at least, given the train journey to Hogwarts and her subsequent stay here was the only time she'd been out of London, and someone had already answered about building cities. She pondered what she'd read as other people answered, glancing between the Professors as if it might suddenly give her inspiration.

It didn't, Sam instead finding herself distracted by Professor Myers and two of her dorm mates. She'd go visit them after they'd returned. They'd appreciate her getting points more than unhelpful attention now, right? She thought Rachel might, at least. It sucked they wouldn't get to come along though.

And then, an answer slipped into her consciousness. Something from Herbology. She couldn't remember if Myers had said it, or her textbook. "Too muc' fer'ilis-eh is bad for the environmen'," she said, putting her hand up. "Like feh crops. Cos it runs off 'n' gets in the riv-ehs. 'n' den green stuff...algi?...grows too fas', disruptin' the 'ole sys'em 'n' the fish die."