Animals gives us nutrients because of the food they eat
Endometriosis
This occurs when the tissue that lines the womb called endometrium proliferates to other regions outside the uterus. The displaced endometrium is still subject to reproductive hormonal changes such as thickening and breakdown as it occurs in the womb. This causes complications with painful symptoms.
3 bases make up the code for amino acids
The extinct animal is most similar to the bottom left due to the spinal similarities. The spine does not demonstrate a sigmoidal curve like the bottom right does. Answer would be bottom left.