The birth rate decreased.
I believe the first was the Tahirid dynasty in Khorasan , which was founded during the caliph Al- Ma’mun’s reign.
Answer:
Group Behavior
Explanation:
This behavior is selfish because it increases predator levels for members of the weaker groups and decreases predator levels for stronger members. However, this behavior is beneficial to all members of the group because it generates a tendency to populate the group with only strong individuals.
