X-ray photographs show softer tissue
a. as bright white areas.
b. the same as dense bones.
c. as invisible.
d. as dark, highly exposed areas.

En el ecuador existieron comunidades prehispanicas que practicaban algun tipo de ritual de enterramiento como el que se describe en el articulo la solidaridad comenzo en las cabernas

True or false. mucous membranes secrete mucus that traps pathogens.

Wich technque is not recommended for use as a supporting detail