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What two ways spines are useful adaptation for sea urchins?

They protect the sea urchin from predators, help in movement and burrowing, and they help them with camouflage.


Two echinoderms that are in the same class are?

Sea urchins and sand dollars.


What animals live in seaweed?

There are many small animals that live in seaweed. Invertebrates such as, bristle worms, scud, prawn, snails, and brittle stars feed on the seaweed. Sea stars, anemones, crabs, jellyfish, and other small fish live in seaweed.


What are the different types of urchins?

There are two common definitions of urchins. An urchin may be a sea urchin, a small prickly animal or to a street urchin or homeless child living on the street.


Describe two ways people affect the ecosystem?

Deforestation: People cutting down trees for agriculture or urban development disrupts habitats for many species and reduces biodiversity. Pollution: Dumping waste materials into rivers, oceans, and soil can harm organisms and disrupt the balance of ecosystems.


How do you put a sea animal on land on animal jam?

You have to have two sea animals and then......


What two animals are invertebrates?

A slug and a sea anemone.


What animals in sea?

Many animals live in the sea. -Whales, dolphins, seals, walruses and manatees live in the sea permanently. Other animals spend much time in the sea, but don't actually live there, -polar bears and sea otters being two of them


What two things that all animals do?

eat and poop


Why are echinoderms grouped with the starfish and sea urchins?

Echinoderms are not 'grouped' with the starfish and sea urchins. Rather echinoderms are the animal phylum to which starfish and sea urchins belong to. Star fish belong to the class Asteroidea and sea urchins belong to the class Echinoidea. There are other echinoderm classes such as sea cucumbers (Holothuroidea) and brittle stars (Ophiuroidea) are two of them. All these classes fall under the Echinoderm phylum. All echinoderms share some distinguishing features: 1. Their adult bodies are arranged in five equal parts 2. They have an internal calcium carbonate skeleton 3. They have a mouth, but no head or brain (they do have a nervous system) 4. They can posses tube feet for locomotion 5. They posses a internal hydraulic system consisting of tubes of sea water to regulate the body's internal pressure and to control movement feeding and respiration.


Which two types of animals eat plankton?

lots of animals eat plankton, some whales, whale sharks, zooplankton eat phytoplankton and lots of fish eat plankton.


What do auroches eat?

The auroch was one of the only animals to eat grass in its time. The animals lives two million years ago.