The national government wants to increase the number of national parks and recreation areas. how will this act with the sustainability of our environment?

it will make our environment a cleaner and greener one, filled with trees, flora and fauna for everyone to view and appreciate the beauty of nature; there'll be fresh air entering our lungs constantly, making our bodies, minds and souls feel refreshed and awake.

hope it helps:))

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.