Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.
Answer:
rotation of the Earth on its axis
changing angle at which the Sun's rays strike the Earth's surface
Explanation:
If x represents the probability of an event happening, then which of the following represents the probability that the event will not happen?
-x
1 - x
x - 1
Answer:
The chopped forests are being used to help burn fossil fuels and help with industrailion for the country.