How an ultrasound is able to produce images of body structures by <span>the sound waves which reflect off of the soft tissue, and a computer converts them into sonograms or visual images. Hope this is the answer that you are looking for. Have a great day!</span>
Answer: from 4,000,000 to 14,000,000 people.
Explanation:
I did some online research for you. Hope this helps.
answer- a secondary source
explanation-since the author of the souce wasnt in the battle it is a secondary source
2 plantation system of the Caribbean
Answer:
<u>"the independent variable—whether or not the students receive money for doing puzzles—has a significant effect, such that students in the paid group spend less time doing puzzles during their break time".</u>
Explanation:
<u>Independent variable:</u> In psychological research, the term "independent variable is described as a variable that is being manipulated, altered or changed by an investigator or researcher in order to see or notice its effect on the dependent variable of the given study. Thus, the independent variable has a direct impact on the dependent variable.
<u>In the question above, the research finds that "the independent variable—whether or not the students receive money for doing puzzles—has a significant effect".</u>
