-
"I'm trying three methods of breeding," Farrant says: conventional, genetic modification and gene editing.
2018年6月六级真题（第一套）阅读 Section B
-
1 million breeding pairs - will be forced to relocate their breeding grounds, or face extinction by 2100.
2019年12月六级真题（第三套）阅读 Section C
-
Although the planned operation will be located more than miles away, drawing the soda ash in through pipelines, conservationists worry it could still upset the natural water cycle and breeding grounds.
2017年12月六级真题（第三套）阅读 Section C
-
And as the distance between their breeding grounds and their food grows, entire colonies could be wiped out.
2019年12月六级真题（第三套）阅读 Section C
-
It reproduces incredibly quickly, breeding up to 12 generations per year if conditions are favorable.
2017年12月六级真题（第一套）阅读 Section A
-
Only a handful of islands in the Southern Ocean are suitable for sustaining large breeding colonies.
2019年12月六级真题（第三套）阅读 Section C
-
The report found that although some king penguins may be able to relocate to new breeding grounds closer to their retreating food source, suitable new habitats would be scarce.
2019年12月六级真题（第三套）阅读 Section C
-
The scientists are breeding successive generations to arrive at varieties that incorporate salt tolerance but retain about 97 percent of the European rice genome.
2018年6月六级真题(第二套)阅读 Section C
-
The study's report states that as global warming transforms the environment in the world's last great wilderness, 70 percent of king penguins could either disappear or be forced to find new breeding grounds.
2019年12月六级真题（第三套）阅读 Section C