Which of the following happens before a black hole comes into existence?
A Gravity ceases to exist in a certain region of space.
B.
A new star is born at the center of a galaxy.
C
An old star collapses in on itself.
Activat
D
The fabric of spacetime is ripped by a star or planet.

What is the relation ship between structure and function in an organism

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of

Organisms may contain up to five levels of organization within their bodies. which level of organization is shown by the liver? a. tissue b. organ c. organism d. organ system