I think it's either coal, petroleum, or peat
Hope this helpa
Dense connective tissue, also called dense fibrous tissue, is a type of connective tissue with fibers as its main matrix element. ... Dense connective tissue forms strong, rope-like structures such as tendons and ligaments. Tendons attach skeletal muscles to bones; ligaments connect bones to bones at joints. I hope this helps
It’s not likely, unless both are white. Then the child is more likely too.
I believe it's the amount of mitochondria