Along with the stars, Kristen shall also show effect of gas, dust and solar system in the galaxy.
<u>Explanation:</u>
Galaxy is a collection of various stars but these are bound to each other in a gravitational bound system. Along with the stars, the galaxy also consists of dust, gas and other kind of dark matter.
The solar systems are also consisted in the galaxy. According to the scientists, there are one hundred billion galaxies in the universe and all the galaxies consisting of a combination of all this.
The industrial revolution began in the mid-to-late 18th century starting in Western Europe, namely England. Inventions such as the flying shuttle, water frame and power loom made mass production of textiles possible and became the first step toward the industrial revolution.
Answer:
2 half lives
Explanation: 100% then 50% = 1 half life, 50% then 25%=2nd