It is bad to litter because that is harming the environment. When you throw out a can, it can harm a animal or several animals. Litter can also sink into the ground (I think) and harm the plants growing.
The encroaching urban areas could harm the wildlife around and in the everglades because of the fear of wildlife (people could shoot the animals) possible expansions could cause deforestation, and human pollution could kill off plants and animals.
It’s a marine/ sea sponge it is a underwater invertebrate. It is classified as animal . Also Sea sponges do not have cell walls or chloroplast typical of plants, but contain animal cells.