Answer: C. Grow the tree in a pot and measure the mass of the soil before and after the tree grows to a certain height
Explanation: When testing an hypothesis, which is a prediction of the outcome of an experiment, it is vital to keep all other factors, that can affect the outcome of the experiment, constant; so that any outcome can be attributed (or disregarded) to the variable being tested.
In this case, the variable being tested is the soil, and so all other factors such as water, air, sunlight, etc. should be kept constant.
<span>Because all Italy was controlled by foreign rule.</span>
Answer: Op-Ed : aims to persuade, expresses opinion, uses loaded language
News Article : aims to inform, uses neutral language, reports facts
Explanation:
The Warsaw Pact sought to reinforce communist dominance in Eastern Europe. The Soviet Union formed this alliance as a counterbalance to the North Atlantic Treaty Organization (NATO)