Is "did she want scrambled or hard boiled eggs? " a direct object

to inform readers about the ways young people improve the world.

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.

the krebs cycle and electron transport occur in the mitochondria, though other than that i would need to know more information.