Q: Fact 1: If an object in a fluid is more dense than that fluid then that object will sink in that fluid because of gravity. Fact 2: An object is buoyant when it is less dense than the fluid around it. Given the two facts above, what decreases when the density of an object increases?

Possible answers:
1). support;
2). heat;
3). forces;
4). air cools;
5). heat energy;
6). buoyancy;
7). Pollution;
8). dry and hot;
A:
6).