Compare and contrast: vaccines versus antibiotics mark each statement as true for either (v)vaccines or (a)antibiotics. a. work only against bacterial infections. b. work primarily against viral infections. c. immunity is provided by injecting a killed or live attenuated (weakened) type of pathogen into a person. the person’s own immune system then creates antibodies against that pathogen that keep them from becoming ill when they come in contact with it in the future. d. if used improperly, can cause bacteria to mutate and become resistant to the medication. e. work because of the types of memory cells in our immune system.

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.

well for one plants are always the producer, so a is the answer. a wolf is more of the consumer(predator) and the deer is the prey so i know those two are out of the question. also mushrooms are fungi/fungus so a is the producer.