All of the statements about vertebrate embryos are true EXCEPT all vertebrates embryos A) develop a tail. B) develop some type of limbs from buds. C) become warm-blooded animals as they develop. D) have segmented bodies at some point during development.

C) become warm-blooded animals as they develop.

Explanation:

Warm-blooded organisms can be described as organisms which can maintain their internal body temperature constant even when the temperature outside fluctuates. On the other hand, cold-blooded organisms can be described as organisms which cannot maintain their internal body temperatures constant.

Not all vertebrates are warm-blooded. Vertebrates, like crocodile, are cold-blooded and hence the statement C is not true. There are many reptiles, amphibians and fishes which are cold-blooded and cannot maintain their body temperatures.

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.

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