根据课文内容填写课文中的原词,每空一词。When you think of a fearsome hunter, images of lions and sharks may spring to mind. Recent research by 【小题1】 scientists, however, shows that in fact, humans are the most fearsome hunters who have the greatest impact on animal populations. Human activities have brought many animals close to 【小题2】. In the last 500 years, over 300 species of animals have gone extinct. Some activities, such as hunting and fishing, directly harm animals, 【小题3】 other activities, such as development in towns and cities, impact indirectly on animal populations.
Hunting and fishing have directly influenced the world’s animal populations. Some people hunt animals for food: whale meat is 【小题4】 in some parts of the world. Some people hunt animals for fashion: animal skin is used to make coats and bags. Still others hunt animals just for fun: deer are 【小题5】 and shot by people who enjoy the 【小题6】 of the sport.
Human activities that have indirect effects on animals can be just as 【小题7】. When we build farms or factories, we destroy animal habitats and leave many animals with【小题8】 to live, or no food to eat. We can also put animals in danger without ever entering their habitats. Air, water, noise and light pollution can all have a deep and 【小题9】 influence quite far from their source. Partly due to pollution caused by ship traffic and other human activities, the dolphin population has 【小题10】 greatly. As the human population continues to grow, so does the effect we have on animals.