The End of the Line: How Overfishing Is Changing the World and What We EatNinety percent of the large fish in the world's oceans have disappeared in the past half century, causing the collapse of fisheries along
Cultural globalization.This aspect of globalization focuses in large part on the technological and societal factors that are causing cultures to converge. These include increased ease of communication, the pervasiveness ofsocial mediaand access to faster and better transportation. These three types of glo...
C. Overfishing and decline of fish species.D. Runoff of nutrients causing algal blooms. 相关知识点: 试题来源: 解析 A. Rising sea temperatures. 珊瑚白化主要是因为珊瑚与共生藻类(虫黄藻)的关系被破坏。当海水温度异常升高时,珊瑚会排出共生藻类,导致白化。各选项分析如下:- **A. 海水温度上升**:直接...
When a critical component or raw material becomes scarce, the entire supply chain can be disrupted, causing delays that ripple through to the end customer. Global supply chains are particularly vulnerable to scarcity. For example, the pandemic exposed the fragility of global supply chains. Lockdown...
D.A warming event causing species to become smaller has never happened before.答案:A 细节理解题。根据第四段最后一句“There is a recent report on warmer temperatures' negative effects on plankton, the base of the marine ecosystem.”可知,气候变化已经对浮游生物产生了有害影响。故A项正确。20.What...
And here's what's so fascinating: as more and more fishing vessels with better and better fishing technology were competing for cod, this competition was causing changes to the biology of the fish and these changes were making it more and more difficult for the cod population to sustain itsel...
Species can also be threatened by genetic pollution – uncontrolled hybridization and gene swamping. For instance, abundant species can interbreed with rare species, thus causing swamping of the gene pool. Overexploitation is caused by activities such asoverfishing,overhunting, excessive logging andilleg...
Reasons: air and water pollution, forests being destroyed, factory farming and overfishing are causing species to die out; without forests, we would have no air to breathe and without clean water we would be unable to survive. Opinions/predictions: many scientists say we are now entering the ...
Sharks worldwide are threatened by human activities such as overfishing, exploitation for certain body parts, habitat degradation, and sometimes, outright slaughter. A major conservation challenge is that we are missing basic information. Although many species are widespread, a lack of fisheries data ...
Water-cleaning units will be required everywhere, both for preventing the spread of disease-causing microbes in man and for preventing the deterioration of the aquatic environment with losses of organisms. A present global concern is the spread of antibiotic-resistant bacteria. Their increase is ...