<span>Chromosomal and genetic causes:
Muscular dystrophy, sickle cell anemia, hemophilia, cystic fibrosis
CHARGE Association (syndrome) and Usher syndrome are the two examples of genetic causes of deaf-blindness
-Teratogenic causes:
TORCH - toxoplasmosis, other, rubella, cytomegalovirus, and herpes.
-Prematurity and pregnancy complications:
Neurological conditions, cerebral palsy -(tongue and mouth cant move to articulate), vision or hearing loss, intellectual disability
-Acquired causes:
Traumatic brain injury (TBI), child abuse, environmental toxins</span><span>Topographical </span>
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Nearsightedness is the answer.
It changes because it goes through phases of growth and changes size and it developed more.
Hope this helps.
Two examples include Cyanobacteria streptococci. Prokaryotes don’t really create systems into higher orders of living things so they create chains like the two I mentioned
