the bar-tailed godwit is a type of shorebird that makes an annual migration from alaska to new zealand and back. the birds make each 11,500-kilometer (7,145-mile) trip by flying over the pacific ocean in about nine days, depending on weather, wind speed, and direction of travel. one bird was observed to make the entire journey uninterrupted, a feat that is comparable to a human running a nonstop seven-day marathon at 70 kilometers per hour (43.5 miles per hour). would you expect the flight (breast) muscles of bar-tailed godwits to use mainly aerobic respiration or fermentation? explain your answer.

The person above me might be correct.

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.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds