Fish live in water. They use their special organ(器官) called gills(腮) for breathing. Some fish are dangerous to humans. Here are the world's most dangerous fishes. Electric Eel(电鳗) - It is a South American fish. Electric eels are long and usually gray-brown in color. The electric...
They use their special organ called gills for breathing.Some fish are dangerous to humans. Here are the world's most dangerous fish.Electric Eel(电鳗)-It is a South American fish. Electric eels are long, and generally gray-brown in color. The electric eel can reach up to 9 feet long ...
One puffer fish has enough toxins(毒素) to kill about 30 humans. There are total 120 kinds of puffer fish all over the world. Four World’s Most Dangerous Fishes Electric Eel ◆It comes from 【1】 and it is long and gray-brown. ◆The blood vessels in its mouth can 【2】 as lungs...
阅读理解 Fish live in water, They use their special organ called gills for breathing. Some fish are dangerous to humans. Here are the world's most dangerous fish. Electric Eel (电鳗) —It is a South American fish. Electric eels are long, and generally gray-brown in color. The electric ...
dangerous to humans D. not related to humans 相关知识点: 试题来源: 解析 C。选项 A“safe for humans”意为对人类安全;选项 B“helpful for humans”意为对人类有帮助;选项 C“dangerous to humans”意为对人类危险;选项 D“not related to humans”意为与人类无关。海蜇能蜇人,说明海蜇对人类危险。
Stings from certain species of cubozoan jellyfish are dangerous to humans and their seasonal presence in tropical marine waters poses a significant risk to coastal communities. The detection of cubozoans is difficult due to high spatial and temporal variation in their occurrence and abundance. ...
While jellyfish are beautiful, they can also be dangerous. Some jellyfish toxins (毒素) can be deadly to humans, such as those from the box jellyfish and the Australian Irukandji, but deaths are relatively rare given the number of jellyfish-sting victims every year. In any case, it’s ...
Fish conform to all of these criteria. Their nociceptors are nearly identical to those found in mammals and humans. These are connected to the brain through neurons. There are also connections between the different structures of the brain, including those which are considered crucial to the experie...
It’s funny, isn’t it? You and I are in this hobby to keep fish alive, and if you have no experience, it’s hard to think there may come a time when you need to kill your pet fish. Well, yourfish tankis actually a pretty dangerous place. Aggressive fish can brutally injure oth...
However, that did not stop scientists inBelgium from working with them to learn more about the sounds these unusual fish make.There are more than 20 different species of piranhas in the wild. Two or three of them are a threat to humans.Among them are red-bellied piranhas that produce ...