Which of the following is NOT an example of an internal structure adaptation? fish gills
xylem in plants
hollow bird bones
tree roots

hollow bird bones or option c

Explanation:

because it helps them fly better

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

hi, natural selection of the peppered moth during the industrial revolution in 19th-century england is an example of an outlier in the study of evolution. during this time, pollution from factories filled the forests, coating trees in a layer of soot—turning white trees black

mark as brainlest

gokuson