I would say D. not all endangered species are able to propagate themselves in captivity.
Water
Soil
The sun
Atmospheric Gases
Temperature.
These are just a few of many, but all abiotic factors are not living. Hence A-Biotic
Biotic means living, so when you put the ''a'' prefix it means the opposite of living.
It depends on if they have a cell wall
Heart pumps blood to your body and it has four chambers. Two Atriums and Two Ventricles.