What can species like the coelacanth tell scientists about the past? a. they can tell us what ancient environments might have been like c. they can tell us how many species were in the oceans millions of years ago b. they can tell us what our ancestors ate d. they can tell us how bipedalism evolved

The correct answer would be a. They can tell us what ancient environments might have been like.

The coelacanth refers to enormous, bottom-dwelling fish that belongs to the ancient lineage.

The fossils of coelacanth help in determining its structure, its age, how it would interact with its environment, its ancestor et cetera.

So, it would provide us the idea about the ancient environments.

it would be c. xylem.

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.