Three reasons a species could become extinct include, deforestation, being overhunted, not enough food available.
Answer:
Haemoglobin (Hb) is a protein present in red blood cells that transports oxygen and gives blood its dark/vivid red color. The amount of haemoglobin in the blood varies from person to person. Men's levels are often greater than women's. This is scientifically proven however, it is often but not all the time.
No it would not if the reason or cause of death is already known.
