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Video: Mpoic/Pond5, Sound effects: bbc.co.uk @2020 BBC.
©2020 WGBH Educational Foundation. All Rights Reserved.
Video: Mpoic/Pond5, Sound effects: bbc.co.uk @2020 BBC.
©2020 WGBH Educational Foundation. All Rights Reserved.
orbitrob/Adobe Stock
©2021 WGBH Educational Foundation. All Rights Reserved.
orbitrob/Adobe Stock
©2021 WGBH Educational Foundation. All Rights Reserved.
Mpoic/Pond5
Mpoic/Pond5
orbitrob/Adobe Stock
©2021 WGBH Educational Foundation. All Rights Reserved.
orbitrob/Adobe Stock
©2021 WGBH Educational Foundation. All Rights Reserved.
WGBH Educational Foundation
WGBH Educational Foundation
WGBH Educational Foundation
WGBH Educational Foundation
WGBH Educational Foundation. Illustration: CK-12 Foundation.
WGBH Educational Foundation. Illustration: CK-12 Foundation.
WGBH Educational Foundation. Ruler: SvitlanaNiko/Shutterstock
WGBH Educational Foundation. Ruler: SvitlanaNiko/Shutterstock
Pixel-Shot/Adobe Stock
Pixel-Shot/Adobe Stock
©Nico Getz. Used with permission. www.youtube.com/nicogetz.
Footage and original music: ©Nico Getz. Used with permission. www.youtube.com/nicogetz
©Nico Getz
WGBH Educational Foundation
WGBH Educational Foundation
WGBH Educational Foundation
WGBH Educational Foundation
WGBH Educational Foundation. Illustration: CK-12 Foundation.
WGBH Educational Foundation. Illustration: CK-12 Foundation.
WGBH Educational Foundation. Ruler: SvitlanaNiko/Shutterstock
WGBH Educational Foundation. Ruler: SvitlanaNiko/Shutterstock
©Vije Miller. Used with permission.
©Vije Miller. Used with permission.
©Vije Miller. Used with permission.
©Vije Miller. Used with permission.