Explanation:
Iron has many uses but as far its chemical properties and the given options are concerned, following uses of iron are due to its chemical properties:
* When iron is put into fire, it produces sparks which are colored, which are not produced by mostly metals. Its purely because of the chemical properties it possess.
* When iron is placed in the water and oxygen, it rusts. When we place iron outside in the open air, when it is thrown some water, after few days you will see that iron has started rusting. This process is purely depends on the iron's chemical properties.
Answer:
dependent: exam score, independent: presence of music,
confounding can be the fact that students in no music condition completed exam as they normally would
high validity
Explanation:
Dependent variable is the variable whose value depends on independent varaible. As independent variable is changed, the value of dependent variable changes
Students in no music condition completed exam as they normally would can be confounding as no description is given about how they would noramlly complete an exam. Any other factor and not no music condition, in normal exam condition could have affected their scores.
The experiment has high validity as the exam scores of student exposed to music was significantly higher than those not exposed to the music. The results also proved the hypothesis.
I believe the answer is: the Spanish-American War.
President monroe has always been an outspoken anti colinialist that condemn what the europan nations did towarh north american, African, and Asian citizens.
Monroe's doctrine influence the Spanish-American War that initiated to helped south american countries in obtaining their freedom from Spanish's colonialism.
This one is jurisdiction and its the power or right to hear and decide on a case.
