music don't make your heart calm it is just giving you what a human mind want that is not usually a some nice thing to want.
Answer:
1. 3
2.A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.
3.There are 3 kinds of contour lines you'll see on a map: intermediate, index, and supplementary.Index lines are the thickest contour lines and are usually labeled with a number at one point along the line.Intermediate lines are the thinner, more common, lines between the index lines.
4.The legend is located in the lower left margin. It illustrates and identifies the topographic symbols used to depict some of the more prominent features on the map. The symbols are not always the same on every map. Always refer to the legend to avoid errors when reading a map.
5.Five Basic Colors on a Military Map.
Explanation:
Just read my answers.
Black holes are important to our universe because it spreads atoms threw the universe.
Answer:
The piano was invented by Bartolomeo Cristofori (1655-1731) of Italy. Cristofori was unsatisfied by the lack of control that musicians had over the volume level of the harpsichord. He is credited for switching out the plucking mechanism with a hammer to create the modern piano in around the year 1700
