Walruses spend a lot of time hunting in arctic waters. when they need to rest, they move onto floating pieces of sea ice. scientists have recently observed walruses frequently leaving the water to rest on land for longer periods of time. what is the most likely reason the walruses are resting on land instead of on sea ice?

Decline of sea ice as a result climate change. Global warming has made sea ice less available.

Explanation:

Walruses are naturally known to spend most of their lives on floating ice for resting and breeding purposes, while they only dive into the icy sea waters to hunt for food. However, recently, there has been a deviation from this normal trend of the walruses. It has been observed that walruses now move to nearby shores and beaches during their resting periods when they are not hunting.

This deviation has been linked to climate change in form of global warming. The decline in sea ice at the arctic region for walruses has been attributed to Global warming as a result of increased global temperature. A rising global temperature has led to the melting of more ice and deepening of sea water levels, leaving little or no choice for walruses to swim farther to shores around especially during resting periods for longer time.

americans began to notice growing differences between the northern and southern sections of the country. there were more people living in cities in the north, which made it more urban. more people lived on farms in the south, which made it more rural. while many people were farmers in the northern states, there were now other ways to make a living, such as working in mechanical cotton gins factories manufacturing cloth, tools and other goods. people in the north supported high tariffs on goods imported from europe because the extra cost encouraged people to “buy american” instead. in the southern states, planters did not like tariffs because they sold most of their production to europe and bought their tools from there as well. southerners believed the protective tariff was something that only northern factory owners keep their profits high. so the southern politicians came up with an idea. they would opt out. they would simply ignore the protective tariff. it was ‘null and void’ in south carolina. the state would not collect the taxes on goods imported into south carolina, no matter what the president said they had to do. this decision led to the nullification crisis.

your answer is "the 1950's"