競爭 Competition
競爭指對有限資源的爭奪，例如食物、地盤或是交配機會。而競爭分為兩種。第一種叫作種間競爭，是指發生於不同物種間的競爭；第二種叫作種內競爭，是指發生於同一物種成員間的競爭。此競爭可淘汰部分老弱殘疾的個體，藉此維持族群大小的穩定。
Competition occurs when limited resource is available, such as food, shelter or even partner. There are two forms of competition among organisms. The first one is called ''interspecific competition'', involving organisms of different species. While the second one is called ''intraspecific competition'', meaning individuals of same species compete for the same limited resources.
