Question
What is the type of echinoderms?
What is the type of echinoderms?
These are exclusively free-living marine animals. They are triploblastic and have a coelomic cavity. The symmetry is radial in the adults and bilateral in the larvae.
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Establish the relationship between speed of sound, its wavelength and frequency. If velocity of sound in air is 340m s–1, calculate
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