根据画线词上文 “In places where wild populations have died out more recently, there's a better chance of success.(在野生种群最近灭绝的地方,成功的机会更大)”以及后文 “the more likely that environment is the same as when the species went extinct(环境越有可能与该物种灭绝时相同)”可知,在...
Yougaingreaterconfidenceinyourself.Also,youbecomemoreoptimisticandcalmerinthemindthanbefore.Thereareseveralreasonsforthesechanges:yourself-imageimprovesasyoustartlivingintidybeautifulrooms,andyougaindecision-makingskillsasyoucontinuetochoosebetweenwhichthingstothroworgiveawayandwhichtokeep.ThewayweletgoofthingsintheKo...
How do ecosystem services benefit humans? How does phytoplankton affect the ecosystem? What causes an increase in ecosystem services? How can an invasive species affect an ecosystem? How are chemical elements cycled through an ecosystem? What is the difference between an ecological community and an ...
What is a dominant species? Dominant Species: Within an ecosystem, plants and animals are interacting not only with each other but with the nonliving aspects of the environment. A dominant species will differ depending on the ecosystem and the specific traits and adaptations needed for that ecosyst...
An umbrella species is usually chosen to make ecosystem management strategies easier in areas where there are a large number of species of concern or where the true biodiversity of an ecosystem isn’t known.1 Using an umbrella species can also help conservationists make a larger positive impact...
However,mans changes to the physical environment have not always hadbeneficial results. Today,pollution of the air and water is an increasingdanger to the health of the planet. Each day thousands of tons of gases e out ofthe exhausts of motor vehicles. Smoke from factories pollutes the air of...
根据第二段中的“the nutria aredestroying vast wetlands every year”以及第四段中的“Theecosystem ... It's destroying the environment. "可知,因为海狸鼠破坏湿地进而破坏了环境,所以科学家对它们很担心。故选A。3.选D 词义猜测题。根据画线词前的“The fur trade keptnutria in check for decades”可知...
Scientists have built an early-warning system based on mathematical models. Ideally, the system would tell us when to adapt human activities that are pushing an ecosystem toward a breakdown or would even allow us to pull an ecosystem back from the borderline. Prevention is key, scientists say,...
“The ecosystem downthere can't handle this non-native species(物种). It'sdestroying the environment. It's them or us,” saysMichael Massimi an expert in this field.The fur trade kept nutria in check for decades, butwhen the market for nutria collapsed in the late 1980s,the cat-sized ...
Invasive species Zebra mussels have been accidentally introduced to many areas, and have become an invasive species in many different countries around the world.Vitalii Hulai/Shutterstock An invasive species is one that is introduced into an ecosystem and thrives so well that it negatively affects na...