Suppose That You Discover the Fossil of a New Organism

question 84

Essay

Suppose that you discover the fossil of a new organism that has radial symmetry and was in a marine environment (as shown by examining the surrounding rock and adjacent fossils in the rock layer). What other features would you look for in order to determine if this fossil is an echinoderm?

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Definitions:

Separator

In electrochemical cells, a separator is a membrane that allows the flow of ions but prevents direct contact between the cathode and anode, thus avoiding a short circuit.

Discriminator

An electronic circuit used to demodulate frequency-modulated signals, converting changes in frequency into amplitude variations.

Resonator

A device or system designed to oscillate with maximum amplitude at a specific frequency, often used in electronic circuits to select particular frequencies from a complex signal.

Cut-off Frequency

The frequency at which the magnitude of a signal is reduced by a specific ratio, marking the boundary between passband and stopband in a filter’s performance.