Birds are able to fly because ______.
a. they are able to control air currents
b. they have colorful feathers
c. they have light and hollow bones
d. they have scales all over their bodies
a. they are able to control air currents
b. they have colorful feathers
c. they have light and hollow bones
d. they have scales all over their bodies
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A. they are able to control air currents. sorry di po ako sigurado