树叶、果实和花是动物及昆虫的食物。
The leaves, fruit and flowers are food for animals and insects.
牛羊整天在草地上吃个不停，那些吃到胃肠里的草，牠们自已享用的只有百分之二十而已，其它绝大部份都排泄出来，最后成为其它小昆虫的食物。
Cattle and sheep keep grazing every day. They just use twenty percent of grass in their stomachs and others are excreted to be food of insect.
这些食物有时会带来对动植物很危险的昆虫和疾病。
These foods sometimes bring insects and diseases which could be dangerous for plants and animals.
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