Many barber schools cost between $6,500 to $10,000 per year, but the price depends on a number of factors, discussed below. How much does barber school cost? Tuition can range from $2,000 to $16,000 depending on the school. Different states have different requirements and regulations that each barber school must fulfill. The basic cost of living should be taken into account as well. Most barber schools do not offer housing.
Sea urchins or urchins (/ËÉrtÊÉªnz/), archaically called sea hedgehogs, are small, spiny, globular animals that, with their close kin, such as sand dollars, constitute the class Echinoidea of the echinoderm phylum. About 950 species of echinoids inhabit all oceans from the intertidal to 5000 m deep.ea urchins feed mainly on algae, but can also feed on sea cucumbers and a wide range of invertebrates, such as mussels, polychaetes, sponges, brittle stars, and crinoids.
Sea otters, sunflower stars and California sheephead prey on purple sea urchins. Sea otter predation on purple sea urchins helps protect kelp forests from destruction. Sea otters that regularly eat purple sea urchins are easily detectedâtheir bones and teeth turn sea-urchin purple! In the intertidal zone, purple sea urchins decorate themselves with shells, rocks and pieces of algae. Scientists think this behavior protects urchins from drying out, getting eaten by gulls or being damaged by the sun's ultraviolet rays. When a sea star strives to get near an urchin, the urchin moves its spines aside and lets the sea star's arm get really close. Then the ...