You may not think earthquakes and volcanoes can go together, but they are unlikely friends, creating sensations under the earth’s surface. Most earthquakes occur because of the movement of tectonic plates previously described. Sometimes earthquakes happen below a volcano. This happens because magma, which is hot molten rock beneath the earth’s surface, pushes on rock until it breaks the rock and seeps into it. Then, the magma builds more pressure until it leaks more magma into the crack. Little earthquakes happen each time the rock breaks and lets in more magma. These little earthquakes are too small to feel. They are called harmonic tremors, perhaps because of their constant release of energy, like one long song played underground. What does the underlined analogy mean in this paragraph?

The underlined analogy between 'earthquakes and volcanoes' suggests the improbable yet benign relationship between the two.

Explanation:

In the given paragraph, the author establishes a relationship between earthquakes and volcanoes using the analogy. He says that the earthquakes and the volcanoes both are located across the fringes of tectonic plates. Although the earthquakes occur due to the 'interaction between the tectonic plates instead of magma yet most earthquakes occurring below a volcano take place due to magma's movement. This analogy helps in elaborating on the resemblance between the two and promote a better understanding.

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.