Biology · KS3 Y9 · Evolution & Inheritance

Extinction

ExtinctionFree1:09Heddy Score 3 of 7, below the standard
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What you need to know

  • A species is extinct when no individuals of it are left alive anywhere.
  • Individuals that are less well adapted are less likely to survive and reproduce.
  • A species can become extinct if it cannot adapt to changes in its environment or cannot compete for resources.
  • When deaths outnumber births for long enough, the species dies out; over 99% of all species that have ever lived are now extinct.

In this clip

Runs 1:09, from 0:14 to 1:23 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • Trusted source · passed. The creator's own upload, live and playable here.
  • On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
  • Spec-true · not judged yet. Accurate, and right for the current UK specification.
  • Focused · passed. One idea, short enough to watch in one go.
  • Accessible · passed. Good captions, clear sound and pictures.
  • Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
  • Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
On YouTube

249K views · 1.65K likes · FuseSchool - Global Education 933K subscribers

As reported by YouTube on 2026-11-02. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

A short, clear definition of extinction and how failing to adapt or compete leads to it.

FuseSchool - Global Education on YouTubechecked 2026-10-22

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