I think protonion is a subatimic particle
The answer to that answer is B
Their digestive systems cannot digest solid foods until that age
The exact number of characteristics that define a living thing are 5. 5 unique characteristics are used to determine whether or not something is a living being.
The DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones
