When you think about fearsome predators in the ocean, the first thing that pops into your mind is probably a shark. Sure, sharks are OK, with their sleek, menacing shape and their gaping jaws with rows of jagged teeth. But if you were a fish living on a coral ree...
Asignificant decline in abundance has occurred since the mid-1980s (Federal Register Notice: 72 FR26722), and data suggest that juvenile steelhead mortality occurring in the Salish Sea (waters of PugetSound, the Strait of Juan de Fuca and the San Juan Islands as well as the ...
根据Great white sharks live in cool seas and oceans all over the world.They eat seals,fish,sea turtles,and they sometimes attack small whales.(大白鲨生活在世界各地凉爽的海洋中。它们吃海豹、鱼、海龟,有时还会攻击小鲸鱼。)可知第三段介绍的是大白鲨的栖息地和猎物。故答案为b。(4)词义理解题。
First,the warmer the liquid becomes,the less gas can hold. That is why carbonated drinks go flat faster when left in the sun, Second,as polar sea melts,it forms a layer of water above the colder,saltier se a water. This process creates a sort of lid th can keep currents from mixing...
Predation on 120 adult sea urchins of the speciesEchinometra mathaei was observed during daylight in shallow-water coral reefs (0.5 to 3 m deep) in a variety of sites in 3 Kenyan marine parks. The predators were few (8 species) and dominated by the triggerfishBalistapus undulatus (65 % ...
The Tiger Sharks animated 3D screensaver provides an excellent opportunity to watch these sea predators and examine their habits. But we must warn you that their easy and supple movements are not more than a trick; as soon as the new victim appears in sight, the sharks attack it in a viole...
Some individuals on Svalbard have been observed successfully hunting reindeer and – elsewhere – killingbeluga whalesthat must surface through a small hole in the ice in order to breathe. What’s the biggest threat to polar bears? Climate changeis causing significant changes in sea ice extent, ...
First, the warmer a liquid becomes, the less gas it can hold. That is why carbonated drinks go flat faster when left in the sun. Second, as polar sea ice melts, it forms a layer of water above colder, more salty sea waters. This process creates a sort of lid that can keep ...
Wentletraps and violet shells (Epitonioidea) feed on cnidarians, as external parasites of those on the sea floor or as predators of those in the water column, reached by floating beneath a bubble raft. Parasitic snails (Eulimoidea) infest echinoderms; their body may be worm-like, and ...
How does a leafy sea dragon protect itself from being eaten by other animals? [ ] A. It moves slowly in the sea. B. It has small fins. C. Its skin looks like leaves. D. Making other animals think it is only a seaweed. (3) Compared with the leafy sea dragon, what does a yello...