To serve energy, the genes in e. coli are always active, nonfunctional, only active when needed, never active

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.

what's the rest of the question

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .