Answer:
d. the tendency to choose a mate with similar personal characteristics.
Explanation:
Endogamy was common in ancient times to preserve the blood, the similarities between the members of the family, and the dynasties. However, this practice was dangerous because of the possibility of creating a generation of members with some kind of genetic disease or malformation.
<span>Mediterranean economies were short of gold but could supply salt, taken by places like the African salt mine of Taghaza</span><span>, whereas West African countries like Wangara </span><span>had plenty of gold but needed salt.</span>
Answer:
Encounter Hypothesis
Explanation:
The encounter hypothesis is one of the oldest theories that contributed to the understanding of the solar system and the planets.
This hypothesis says that a collision took place as a result of which a large amount of gas was released from the sun which was migrating more towards the same directions around the sun.
The sun eventually passed through a large, dense and thick interstellar cloud and it later appeared in the form of a gaseous envelope. This later gave rise to the creation of planets and finally formed the solar system. This entire formation of planets and the solar system took a huge amount of time.
This can be considered as an alternative to the nebular theory.
