How do the presence of gills and lungs ss well as a bone structure that is homologous to that of tetrapods support the idea that tiktaalik fills in the gap between aquatic and land dwelling species

answer: substrate concentration. enzymes work best when there is a high enough substrate concentration for the reaction they catalyse.

japan is the correct anwser because i already took the test and i passed it

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101