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.
Limited factors would mean that as the population in a community grows individual species would have to compete for those limited factors as the population reaches its carrying capacity. Also, the population as a whole would only be able to reach a certain number before falling due to there not being enough of the limited factors (ex. food) for that population to continue growing exponentially.
Expression of how a given product.
the answer is the last one