Your apple trees are growing well and producing healthy fruit in early summer, but your grape vines look wilted and have little holes all over them. You also notice a preponderance of moth larvae and Japanese beetles have started to emerge. What could you do to protect your investment?

Use pesticides.

Explanation:

I use pesticides to protect my grapes field because pests such as moth larvae and Japanese beetles etc attacked on my grapes field and to protect this field from further destruction, spray of pesticides is compulsory in order to kill the pests present on grapes. There are also some other methods such as mechanical and biological method to control the population of these pests in the field but these methods takes a lot of time to be effective.

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.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: