19টির মধ্যে 16 নম্বর ক্লাস
How old is the Earth?: Crash Course Geology #17
ক্লাস19টি ক্লাস
- 1Crash Course Geology Preview
- 2Intro to Geology: Crash Course Geology #1
- 3Earth's Crust and Mantle Explained: Crash Course Geology #3
- 4What’s at the center of the earth?: Crash Course Geology #4
- 5How Do Minerals Form?: Crash Course Geology #5
- 6The Rock Episode: Crash Course Geology #6
- 7Where Do Diamonds Come From?: Crash Course Geology #8
- 8How Water Shapes the Land: Crash Course Geology #9
- 9What is Plate Tectonics: Crash Course Geology #10
- 10How Do Mountains Form?: Crash Course Geology #11
- 11The Deepest Point in the World: Crash Course Geology #12
- 12Volcanoes Explained: Crash Course Geology #13
- 13Earthquakes Explained: Crash Course Geology #14
- 14Is it Possible to Prepare for an Earthquake?: Crash Course Geology #15
- 15The Mystery Behind Earth’s Missing Rocks: Crash Course Geology #16
- 16How old is the Earth?: Crash Course Geology #17
- 17How Do Fossils Form?: Crash Course Geology #18
- 18The Future of Glaciers: Crash Course Geology #19
- 19How Often do Asteroids Hit the Earth?: Crash Course Geology #20