Which of the following issues is causing pollution and damage to water ecosystems in Nigeria?
A.
dam construction on the Niger River
B.
toxic dumping by factories
C.
spills from the nation’s oil production
D.
too many older vehicles on the roads

C. Spills from the nation's oil production.

Explanation: I took the test.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.