Today, we know that the climate history over the last 10.000 years has been drastically changing. One particularly important aspect on what had happened was the fact that the glaciers and ice caps melted - a.
This has been happening over the thousands of years and has been increasingly noticeable in the last couple of decades.
Answer:
B................ because the Earth is not flat lol
The problems: Climate change, severe increase in pollution and over harvesting/illegal trade
Queen Nzinga fought against Portuguese influence in Ndongo. Hope I helped!