阿禾在旅行册里种下一粒种子。人类怎样从采集走向种植？Ahe draws a seed in the notebook. How did people move from gathering plants toward cultivating them?
第 1 步：变化持续许多代Step 1: Change took generations
人们先采集野生植物。People gathered wild plants before some communities cultivated them.
部分群体后来播种、照料和收获。驯化是生物性状逐代改变。它并非某天突然发明农业。不同地区有不同时间表。Sowing, tending and harvesting created new relationships. Domestication means inherited traits changed across generations. Farming was not invented everywhere on one sudden day; regions followed different timelines.
第 2 步：留种会改变下一季Step 2: Seed choices matter
更易收获的谷粒被留下播种。Seeds from useful plants could be saved for another season.
长期选择会改变作物。动物也经历不同的驯化过程。种植与采集可以并存。不是所有群体都走同一路线。Repeated selection changed crops over time. Animals followed their own domestication histories. Cultivation and gathering could coexist. Communities did not all follow one universal path.
第 3 步：增加粮食，也带来代价Step 3: Benefits and costs
储粮可支持较稳定的聚落。Stored food could support more settled communities.
但单一作物可能更怕歉收。劳动负担、饮食和疾病环境也变化。阿禾用两栏记下收益与代价。农业不是对所有人的即时改善。Depending heavily on a crop also brought harvest risks. Work, diets and disease environments changed. Ahe records benefits and costs. Agriculture did not instantly improve life for everyone.
🎮 种子与许多代的变化🎮 Seeds across generations
把四张过程卡按本页示意顺序排列。点击上移、下移，再检查。它是教学模型，并非所有地区的唯一路径。Arrange four process cards in the illustrated order using the up and down buttons, then check. This is a teaching model, not the only path in every community.
一句话记住它：农业转变是长期过程。Remember: The transition was gradual.
农业转变是长期过程。The transition was gradual.驯化涉及跨代性状改变。Domestication changes inherited traits.收益与代价需要同时看。Consider benefits and costs together.
依据上述公开资料编写 · AI 辅助制作 · 发现问题欢迎指正，帮这片叶子长得更好。Based on the public sources above · AI-assisted production · Spotted a problem? Tell us — help this leaf grow.
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