I think the word you're looking for is "hypothesis".
For example, a hypothesis could be "dogs drink more often when owners are present".
And then this can be proven (or dis-proven) by an observation (or in this case rather: measurement).
Based on what I found that country is Switzerland.
Answer:
Land use has a major impact on the water quality of both surface and ground water. Land use refers to the human use of the land. ... Certain kinds of land use can change the hydrology of the Watershed, altering the way water and pollutants move through the drainage basin.
Explanation:
Mc Whorter believes that texting “degradates written language” because he deliberates that texting is not really a written language. He also adds that texting bear a resemblance to spoken language due to the fact that it evades punctuation and capitalization. It has a tendency to to be looser and telegraphic, as well as less reflective.
