Invasive species often unbalance the ecosystems into which they are introduced because
a. they did not co-evolve with the natural species and lack natural controls, like predators
b. they breed quickly and have the potential to overpopulate an area
c. they consume local resources
d. none of the above

The correct answer is option A

Invasive species can be defined the species that are introduced intentionally or unintentionally in an environment.

These species might adopt the environment in which they are placed or might not get involved in the environment.

Invasive species often unbalance in the ecosystem because they did not co-evolve and fit into the ecosystem as they are not controlled by the natural control like predators.

This creates ecological imbalance.

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.

i think the answer is g1

hope i

-lavira: )