Activa JavaScript para disfrutar de los vídeos de la Mediateca.
PRIMARIA 5º CIENCIAS DE LA NATURALEZA DIRECT ALTERATION OF ECOSYSTEM - Contenido educativo
Ajuste de pantallaEl ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:
Today we are going to talk about direct alteration of ecosystems.
00:00:00
The human beings can alter the balance of ecosystems into two ways, direct alteration and indirect alteration.
00:00:19
Today we are going to talk about direct alteration.
00:00:28
The direct alteration is the elimination of plants or animals.
00:00:34
Humans usually have a direct alteration on ecosystems by doing activities that involve natural resources such as hunting, fishing and logging.
00:00:42
Humans have changed many natural ecosystems, such as forests, into artificial ecosystems, such as farmland or cities.
00:00:52
Bye!
00:01:05
- Autor/es:
- CEIPS SANTODOMINGO
- Subido por:
- Cp santodomingo algete
- Licencia:
- Reconocimiento - Compartir igual
- Visualizaciones:
- 10
- Fecha:
- 14 de marzo de 2017 - 15:56
- Visibilidad:
- Público
- Centro:
- CP INF-PRI SANTO DOMINGO
- Duración:
- 01′ 07″
- Relación de aspecto:
- 1.78:1
- Resolución:
- 1920x1080 píxeles
- Tamaño:
- 50.20 MBytes