Raccoons prefer woody areas and are omnivores, which means that they eat meat and plant materials. they are nocturnal, meaning that they are active at night. they are often eaten by mountain lions, gray wolves, and coyotes. which of the following is a limiting factor for a raccoon population?
shortened summer days
deforestation
claw length
breeding season

organisms that lack symmetry are called asymmetrical and belong to phylum porifera/sponges.

organisms with specialized stinging cells belong to phylum cnidaria. stinging cells are called cnidoblast cells.

cnidarians show two morphological forms : polyp (sessile) and medusa (mobile)

filter feeding is observed in porifera members.  

alternation of generation is observed in coelenterata or cnidaria. there is alternation of asexual polyp form and sexual medusoid form. it is also referred as metagenesis.