Due to the need to have completely controlled experiments to test a hypothesis, science can not prove everything. For example, the scientific method cannot alone say that global warming is bad or harmful to the world, as it can only study the objective causes and consequences.
The best answer would be option 3:
Fault Q occurred before layer K was deposited.
If you'd like to know why:
As you can see in the diagram, fault Q does not cross layer K. It stops right under it, so this means that the fault occurred first, then over a span of time, layer K was deposited.
To rule out the rest:
The oldest layer is the one at the bottom so that should be Layer B.
The youngest should be the top-most layer, unless a fault or an intrusion cuts through it, so Layer K is the youngest.
The last option is wrong because fault Q cuts through all those layers, which means it happened after those layers were formed.
Plutonium. The others are fossil fuels.
Answer:
Controlled variables are variables that do not change, they stay constant throughout the experiment and are the same among each experimental group. So for this experiment, some controlled variables would be;
- Amount of sunlight
- Amount of water
- Time to grow
- Type of plant
- Soil to grow in
