📚 Pesticides and the Food Chain | 农药与食物链
Pesticides are widely used in agriculture to control pests that damage crops. However, these chemicals do not always stay where they are sprayed. They can enter food chains, pass from one organism to another, and become more concentrated at higher trophic levels. This article explains how pesticides move through food chains and why this matters for ecosystems.
农药在农业中广泛用于防治危害作物的有害生物。然而，这些化学物质并不总是停留在喷洒的地方。它们可以进入食物链，从一个生物传递给另一个生物，并在较高营养级中变得更加浓缩。本文解释农药如何沿食物链传递，以及为什么这对生态系统很重要。
1. What Is a Food Chain? | 什么是食物链
A food chain is a simple model that shows the feeding relationships between organisms in an ecosystem. It lists organisms in a sequence where each organism is eaten by the next one.
食物链是一种简单模型，展示生态系统中生物之间的取食关系。它按顺序列出生物，每个生物被下一个生物吃掉。
ts from the food to the feeder. It represents the transfer of energy and biomass, not just 'who eats whom' rass → rabbit → fox, the arrows mean grass is eaten by rabbit, and rabbit is eaten by fox.
食物链中的箭头从食物指向
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