Scientists have used the distribution of fossils and rocks, continental shapes, and seafloor structures as evidence of past plate motions. alfred wegener, a german geophysicist, proposed the theory of continental drift based on his studies of similar fossils and rock strata across continents. wegener found a mountain range ending at south africa's coast seemed to align with the edge of a range in argentina, forming a continuous belt. this map displays similarities in fossils found on continents based on wegener's theory. which statement provides additional evidence supporting the scientific conclusion that continents were once joined, but have drifted apart over time?

The sequence of rock layers on Africa's western coast are almost identical to the sequence found on South America's eastern coast, also including a layer containing fossils similar to each other

Explanation:

This is because Geologist Alexander du Toit found layers in both locations to have the following sequence: basalt rock, shale containing fossil reptiles, coal layers containing Glossopteris fossils, rocks containing Mesosaurus fossils, and shale.

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.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.