African lungfish, which are often found in small, stagnant pools of fresh water, produce urea as a nitrogenous waste. what is the advantage of this adaptation?
a) urea takes less energy to synthesize than ammonia.
b) small stangnant pools do not provide enough water to dilute the toxic ammonia.
c) the highlt toxic urea makes the pool uninhabitable to potential competitors.

b) small stangnant pools do not provide enough water

Explanation:

African lungfish is obligate and fresh water habitat organism.

It aestivates between raining season During this peroid it produces UREA which is non toxic and stores iin the body to be excreted into water on the return of wet seasons.

Therefore, if it produces Ammonia, during Aestivation;ammonia is posinious and this kills the lungfish during aestivation of no water and oxygen supply.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.