Other than food and oxygen what do marine plants provide for other marine organisms

What major structure can be used to tell apart the embryos of acoelomates pseudocoelomates and coelomates?

If you were given a map of the sensory cortex in the postcentral gyrus of the cerebrum, do you think the map would have more “space” devoted to the regions of the body that have the highest density of sensory receptors, or the regions of the body that have the lowest density of sensory receptors? explain

What adaptations can prey use to avoid predation