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1. spicules (calcium carbonate or silica)
2. spongin (protein)
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∙ 12y ago
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Multiple echos in a concert hall?
In concert halls the walls are made out of acoustic materials. The materials, as well as the amplifier may result in multiple echoes in a concert hall.
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They may be manufactured wholly or partially of leather, plastic, or fabric, or from a combination of these materials
What materials did May Gibbs use to draw with?
Try this site: http://www.northsydney.nsw.gov.au/resources/documents/25_may_gibbs.pdf
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What minerals are in the headstock of an ukulele?
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What two materials that may form a vertebrate skeleton?
bone and cartilage
What are the skeleton components possibly made of that sponges may have although sponges do not have a skeletal system?
Although sponges do not have a skeletal system they do have skeleton components that may be made of silicon or lime. A sponge is found in the ocean and is a hollow tube that has several large pores throughout it.
Why are spicules used as a primary characteristic in taxonomy of sponges?
Spicule shapes and mesh structures are essentially the only variable amongst sponge morphology that can be easily differentiated. Sponges are often described as evolutionary dead ends because there is so little variation possible (comparatively) with simple structures and very limited cell types.
If a living sponge in pieces each piece may produce another sponge?
"yes", If you take a piece off of a sponge it will grow another sponge.
What does the skeleton have in the mystery of the Mayan sword?
because the skeleton is the blow and the spirit to the may an sword.
What theoretical particle that may compose both protons and neutrons?
Quarks
How may bones compose the vertebral column?
it is composed of 24 bones
What is a Purple Tube Sponge?
This is from www.reefnews.com: This Purple Tube Sponge colony lives on a dead coralhead. The coral may have succombed to the algae and sponges that grew over the polyps and killed them. Now the skeleton of the coral supports a variety of sponges and algae. Sponges are colonies of thousands of individual cells. The cells work together, pumping water through the body of the sponge. The tall tube is in the shape of a "chimney." This chimney is an exhaust tube, where the water pumped by the sponge comes out. The sponge eats the plankton it filters out of the water as the water is pumped through the body of the sponge. Animals that eat sponges and algae help to keep a healthy balance on the reef. If there are too few of these animals, then the sponges and algae may take over. Examples of algae eaters are Parrotfishes, Sea Urchins, and Crabs. Examples of sponge eaters are Hawksbill Turtles and Loggerhead Turtles.
Why does a sponge have less mass than a book of the same size-?
Even though a sponge may be the same size as a book, the sponge has hundreds of holes in it. The book has far more material in the same amount of space that the sponge takes up. In other words, the book is far more dense than the sponge.
What date was the first spongE bob episode?
May 1, 1999.
When did the first sponge bob cartoon get released?
May 1, 1999
How many osculum is in sponges?
osculum - a large opening in a sponge through which water flows out of the sponge. Sponges may have more than one oscula.
