"We know that when Adam was placed on the earth it
was pronounced 'good,' and he, as well as the earth, was not subject to
death. There was no 'curse' on the earth. There was no blood in his
body, but he had a spiritual body until it was changed by the fall. A
spiritual body is one which is not quickened by blood, but by spirit.
Before the fall Adam had a physical, tangible body of flesh and bones,
but it was not quickened by blood. The partaking of the forbidden fruit
caused blood to exist in his body and thus the seeds of mortality were
sown and his body then became temporal, or mortal, subject to the
vicissitudes of mortal change. The Lord created all things upon this
earth physically and immortal, or free from the seeds of death. The
fall of Adam brought the change upon the earth and all things upon its
face partook of the conditions imposed upon Adam in the fall. (2 Nephi
2:22.)"