calcispongia----composed of calcium
hyalospongia.....made of silicates
demospongia....made of protein
yes, focal lens length has three classifications
the three classification of technology is: tools product process
cd
three
asa, usfa, usssa
Small, medium, large
False :)
preventive, corrective, and functional
aging-life extensoin-hospitals
igneous, metamorphic, and sedimentary
The three classes of sponge skeletons are siliceous or glass sponges (Class Hexactinellida), calcareous sponges (Class Calcarea), and sponges with a fibrous protein skeleton (Class Demospongiae). Each class has unique structural characteristics that support the sponge's body.
The three classifications of protists include animal-like protists (protozoa), plant-like protists (algae), and fungus-like protists (slime molds). These classifications are based on their mode of nutrition and cellular structure.