Answer:
differentiation
Explanation:
acquiring special features especially during embryo development
This means that we all are the descendants of one ancestor !! thus our genes match !!
They have longer periods of revolution.
Answer:
In natural environments, horses typically live in relatively stable social units. Horses live in herds so that they are able to fulfil their basic needs, which are to avoid danger or harm, and to reproduce successfully and bring up healthy foals.