A Complete Collection of 100000 Whys
Fav十万个为什么
为什么生物会灭绝？
1、环境变化：气候变化、地质活动（如火山爆发、地震）等会导致栖息地破坏，使生物无法生存。
2、捕食与竞争：生物间的捕食关系和资源竞争可能导致某些物种数量锐减甚至灭绝。
3、疾病传播：病原体的出现和传播可能对特定物种造成毁灭性打击，尤其是对免疫力较弱的物种。
4、人类活动：过度开发、污染、栖息地破坏（如森林砍伐、城市扩张）等人类行为加速了生物灭绝。
5、外来物种入侵：外来物种的引入可能破坏当地生态平衡，导致原有物种被排挤甚至灭绝。
总之，生物灭绝是多种因素共同作用的结果，包括自然环境和人为因素，这些因素相互交织，使得生物多样性面临严峻挑战。
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