Possible answers:
(1). fresh water;
(2). the environment;
(3). salt water;
(4). liquid;
(5). river water;
(6). Absorb light;
(7). Sediment;
(8). black water;

Fact 1: Marine biomes are found in the salt water of the ocean. Fact 2: An ocean is a large body of salt water. Given the two facts above, marine biomes are found in large bodies of what?
Answer:
(3).