Consider the impacts of making nonrenewable energy resources available to use. Think about how your lifestyle creates demand for various types of energy, as well as how such energy is produced.

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.

doctors i believe if i'm wrong sorry

littering streams           is the answer

answer: c. two haploid cells

explanation: