Answer:
CFTR protein is found in the cells lining the lungs
Compare the limbs of different organisms goes in left box. compares fossilized structures to living organisms left box.
other 2 go in the right box hope this helped(:
Kelp --> sea urchins ---> sea otters best represents the feeding relationships in a kelp ecosystem that has not been disturbed
by humans.
Observation the action or process of observing something or someone carefully or in order to gain information:
