B.4 When the diameter doubles the volume eight times and the surface four times would be increased so that's why the answer is 4
Answer:
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Sponges belong to the Phylum Porifera and hence are one of the most primitive organisms. The sponge would not be impacted by the drug.
Their bodies are asymmetrical. frame form can be cylindrical, vase-like, rounded or sac-like. they're diploblastic animals with layers, the outer dermal layer and the internal gastral layer. there's a gelatinous, non-cell mesoglea, in among these layers.
The phylum Porifera comprises the sponges. Sponges are simple invertebrate animals that live in aquatic habitats. despite the fact that the general public of sponges are marine, some species stay in freshwater lakes and streams.
Most sponges are hermaphroditic male and female cells exist in one animal and reproduce by using freeing spermatozoan into the water present day to be carried to other sponges, wherein they interact with eggs. Sponges also can reproduce.
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Answer:
Global climate change affects the distribution of species.
Explanation:
