changes the business radically?

Nuclear war

Explanation:

If there were to be a nuclear war, this would affect a lot of companies, due to there company not existing or the fact that the owners and all consumers were burnt/eradicated.

This would also affect our economy meaning it would be very tough to actually pay off all damages done to our world, aswell as our country.

halibut, flounder, tuna, and trout are all fish. so your first answer is 1.) fish. and since fish is edible, your next answer would be 3). edible

to describe those fishes more thoroughly, some of those fishes live in fresh water, and some of the fishes live in salt water, and that is not a thing that they all have in common. the question is asking what is common with all of the fish, so answer choices 2). fresh water and 4). salt water are not right.

sorry idk this one sorry i cant u