But in experimental areas protected from fire, a few perennial grass species eventually come to dominate, outcompeting all others.
但在受火灾保护的实验区,一些多年生草本植物最终占据了主导地位,超过了其他所有植物。
2
A massive oak claims its ground for 200 years or more, outcompeting all other would-be canopy trees by casting a dense shade and drawing up any free water in the soil.
The research finds that cats have played a significant role in making 40 dog species extinct, outcompeting them for scarce food supplies because they are generally more effective hunters.