Sea urchins(海胆)are small creatures,but what's really remarkable about them is that they eat anything that happens to float by.They have really sharp teeth they use to rid rocks of algae(海澡),which makes them pretty...
But turning to sea urchins instead of man-made solutions seems like the best way to go.【小题1】Why are sea urchins regarded as outstanding creatures?A.They are tiny but have teeth.B.They can keep the ocean clean.C.They are useful in removing algae.D.They grow on coral reefs with ...
If you’re in shallow or rocky areas of the ocean, keep an eye out for sea urchins. Watch where you step and where you put your hands to avoid surprise contact with them. Don’t go into the ocean at night if you know there are sea urchins in the area. Wearing water shoes or flip...
Examples include porcupines, sea urchins, and hedgehogs. What information do you need in order to determine whether or not spines are the result of homology or homoplasy?A(n) what is an example of an invertebrate chordate? a. tunicate b. hagfish c. earthworm d. lobe-fi...
【题目】 Sea urchins(海胆) are small creatures , but what’s really remarkable about them is that they eat anything that happens to float by. They have really sharp teeth they use to rid rocks of algae(海藻)which makes them pretty valuable especially in places like Hawaii where algae are ...
The scientists then put a group of healthy sea urchins grown in a laboratory in a tank with some of the parasites. Six of the 10 urchins in the tank later died. The scientists are now working to find a way to prevent future losses. They do not have a treatment for the sea urchins,...
What phylum do sea urchins belong to? What is the common name for the phylum Nematoda? What phylum do butterflies belong to? What is the genus and species of an earthworm? What phylum are cestodes in? Is an earthworm a member of the phylum Nematoda?
Starfish or Sea Stars? The animal that you know as a starfish is getting a new name! Marine biologists are trying to get people to start calling them sea stars instead of starfish because they aren't really fish. They're actually related to sea urchins and sand dollars, and they only li...
off and fall to the bottom to provide food for the urchins in their crevices. The sea otters thrive hunting for sea urchins in the kelp, and many other fish and invertebrates live among the fronds. The problems start when the sea otter population declines. As large predators they are vuln...
What phylum do sea urchins belong to? What phylum are stingrays in? Is a starfish a reptile or amphibian? What is the photic zone of an aquatic ecosystem? What eats sponges in a coral reef? What is an aquatic ecosystem? What oceans do loggerhead sea turtles live in?