Concepts: know, live, organism
A: to understand the biology of marine organisms we must know something about the environment in which they live .
Concepts: country, deliver, politician, speech
A: politician delivering his speech about country in september
Concepts: aquarium, mount, wall
A: An aquarium mounted on a wall above a toilet.
Concepts: food, hotdog, tray
A:
a couple of hotdogs and other foods on a tray