Sorry for answering 8 hour hours later and sorry if this is wrong but I think the 2 factors of a human being is the heart and lungs.
Hope I helped!
The World Health Organization's <span>Communicable disease control in emergencies pamphlet.
(I wish there was more context so I could provide a more reliable answer)</span>
Answer:
The symptoms involved in ontogenesis imperfect are- bone breakage, pain in bone, deformation of bones, brittle teeth, coloured tint in the white portion of eyes, loss in hearing and loose joints.
Explanation:
In the disease, ontogenesis imperfect, the strong bone formation in body is prevented by the defective gene that produces collagen protein. People who have the deficiency of collagen by birth, can develop this disease or can have it by birth. This defect can be hereditary.
The symptoms included in this disease are the- deformation and breakage of bones, pain in bone, grey or purple tint in the white portion of the eye, short stature, brittle teeth, hearing impairment and loose joints.
