They have a bad reputation, but are they really dangerous? After all, a cow is more likely to kill you than a shark [source: Faletto]. But nobody is making movies about deadly cownados. For many, sharks represent the unknown and the unknowable. Any shark that measures more than 6 ...
Fishing is a threat to sharks. As if the sharks didn't have it hard enough, fishing for other kinds of fish can ultimately lead to the death of a shark. Think about it - what do sharks eat? Fish! So, if large amounts of the fish that they eat are caught, then the sharks don'...
因此这是一个非常复杂的生理过程,所以靠酒精或者药物之类的麻醉神经等方式强行进入昏睡状态并不能有效地起到真正睡眠所起的作用。打个比方就好比每天晚上你的电脑或者手机要进入维护模式,进行磁盘碎片整理(memory 的转移和索引),安装固件更新漏洞补丁(增强免疫系统功能)之类的,喝醉昏睡过去大概就等价于强行拔掉电源——虽...
Are shark teeth bone or cartilage? Shark teeth are composed of dentin and enamel, both of which are hard tissues but not considered to be bone. These materials help protect theshark’s teethfrom damage and wear and tear during feeding. As a result, sharks are able to maintain sharp sets ...
Why is the Danube River called the Blue Danube? Why are frogs considered ecologically friendly? Why is the Red Sea warmer than the Arabian Sea? Why are no freshwater animals osmoconformers? Why is sea water salty? Why are sharks a keystone species?
So why does Japan still hunt? Well it's for "research". “Research” is something that many countries have used to continue their act of Get AccessRelated The Game Of Biome By Mark Lynas Most whales are slow breeders and the reproduction rate is 1-3 per year. Steam ships have been ...
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the sun goes down or comes up, sharks are___(39)food. So at these times people___(40)go swimming in the ocean. Each year, bees, snakes and elephants kill (杀死) more people than sharks do. 31.A.over B.under C.some D.behind 32.A.wide B.tall C.high D.long 33.A.cool B....
Why Do Sharks Have a Taste for Fiber Optic Cables? ✕Remove Ads Contrary to some shark flicks (yes, we’re looking at you, Jaws 2), sharks don’t eat the cables because cables are not part of a shark's diet. Being the curious creatures they are, sharks sometimes fall victim to th...
I bet there are fish and whales and sharks and octopuses and so many other amazing animals just waiting to be found. And who knows what other mind-blowing stuff is hiding in the depths of the sea?That's why ocean exploration is SO important. By sending scientists and explorers and underw...