What is the function of the air sacs in the respiratory system of birds? ?

Me if the environment changes, what is the first thing a species will do to survive? question options: the species will suddenly move from the area the species will adapt to the changes the species will change the environment back the species cannot survive a change in the environment

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.