The key evolutionary development of animals seen for the first time in sponges is that of Multicellularity. A Multicellular organism has a longer lifespan than an unicellular organism and since it has multiple cells, it can perform more functions. Sponges do not have distinct circulatory, respiratory, digestive, and excretory systems – instead the water flow system supports all these functions.
It would slow down in the stage of growing or
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The Clean Water Act does not ensure high water quality throughout the nation because it does not have a means of enforcement.
The correct answer is D.) Have a means of enforcement
I hope this helps.
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