I'm pretty sure that it's natural gas.
The answer is D.rainforest. it is a very complex ecosystem with variety of plants and animals.
List of objects that float:
Ice
Wood
Rubber
Soda cans
Plastic toys (such as a duck)
Innertubes
Balloons
Frisbees
Legos
Plastic containers (Tupperware, etc.)
Answer:
This is a catastrophic disturbance
Explanation:
