Why chloroplasts came from cyanobacteria

In the Roman Empire, a husband generally had no legal power over his wife's property, including what she brought to the marriage. A married woman remained formally under her father's authority, but became legally independent when he died.

Surfaces such as asphalt and concrete cannot absorb rainwater, so large amounts run quickly into rivers instead. This raises the risk of floods and causes more damage to riverbanks farther downstream.