Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs, and have no body symmetry.
The shapes of their bodies are adapted for maximal efficiency of water
flow through the central cavity, where it deposits nutrients, and leaves
through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are sessile
aquatic animals. Although there are freshwater species, the great
majority are marine (salt water) species, ranging from tidal zones to
depths exceeding 8,800 m (5.5 mi).
Nearly all of the energy comes from the sun
Its B cuz the definition is <span>one of two or more alternative forms of a gene.
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Depends on what you have to watch stuff on, make sure you check reviews of movies to see how good they are. I’m currently watching attack on titan, but I really enjoy studio ghibli movies, they are on HBO Max and other places
