Which of the following types of trash, found in the ocean, typically accumulates at the surface because it doesn't readily sink or biodegrade?

Plastics.

Explanation:

These are plastics. Plastics are neither sinkable( being lighter) nor they are biodegradable( they do not degrade by themselves are remain in the ecosystem for years). Thus, causing alot of damage to marine life forms. Makinf to difficult for them to gain sufficient oxygen and sunlight.

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.

this is a pretty broad question and can be a pretty lengthy answer. since 1900, women have gained a lot more rights and have become active in the workforce. with women being in the workforce, men play a larger role in family life. many family tasks are shared between men and women, whereas, women used to be the sole family caretakers.

that should get you started at least.