<p class=lexical__paragraph><span style=white-space: pre-wrap;>菜園裏頭至少有兩個蜘蛛網,蜘蛛是昆蟲生物鏈的最頂端。上次剛好拍到牠捕時白紋蝶的鏡頭。是王榕elena先發現的。</span></p><p class=lexical__paragraph><a href=https://www.bbc.com/zhongwen/trad/science-39281404>://www.bbc.com/zhongwen/trad/science-39281404</span></a></p><p class=lexical__paragraph><span style=white-space: pre-wrap;>比如,納芙勒爾博士說,蜘蛛捕殺大量的植食昆蟲,進而保護了植物免受這些昆蟲的侵害。</span></p><p class=lexical__paragraph><span style=white-space: pre-wrap;> </span></p><p class=lexical__paragraph><span style=white-space: pre-wrap;>生物學家計算出,全球的蜘蛛每年要吃下4000至5000萬噸的食物,主要是昆蟲。</span></p><p class=lexical__paragraph><span style=white-space: pre-wrap;> </span></p><p class=lexical__paragraph><span style=white-space: pre-wrap;>科學家說,蜘蛛的胃口大的相當於每年全球人口消耗的肉和魚的總重量。</span></p><p class=lexical__paragraph><span style=white-space: pre-wrap;> </span></p><p class=lexical__paragraph><span style=white-space: pre-wrap;> </span></p>