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Hello buddies, this is the last video of unit number 5, Relationships in an Ecosystem.
00:00:01
And this time we are talking about the beneficial and harmful relationships.
00:00:08
Living things in an ecosystem interact with each other, and depending on the type of interaction,
00:00:13
there are different types of relationships. There are four of them.
00:00:19
For example, mutualism, commensalism, parasitism, and competition.
00:00:22
Let's start with mutualism.
00:00:31
Mutualism is the relationship between two species when both benefits.
00:00:36
And I'm giving you an example.
00:00:41
Bees obtain nectar from flowers, and the flowers are pollinated by the bees.
00:00:45
Commensalism is the relationship between two species when one benefits and the other remains unaffected.
00:00:52
For example, Grimoras live around sharks and feed on the bits of food sharks leave behind.
00:01:00
This relationship benefits Grimoras but does not affect sharks.
00:01:09
Parasitism is the relationship between two species when one benefits and the other suffers.
00:01:15
The species that benefits is called parasite.
00:01:21
And as an example, here you are a very annoying or irritating parasite, fleas.
00:01:24
Fleas live on the skin of dogs and suck their blood.
00:01:33
The last relationship is competition, which is the relationship between different species that have the same needs.
00:01:36
And as an example of competition, we can talk about squirrels and doe mice.
00:01:47
They both compete for the same shelters in trees, and they need the same food.
00:01:55
And this is the end of the video. Bye bye, students!
00:02:03
- Idioma/s:
- Idioma/s subtítulos:
-
- Autor/es:
- Matías Díaz Fernández
- Subido por:
- Matías D.
- Licencia:
- Reconocimiento - No comercial - Compartir igual
- Visualizaciones:
- 5
- Fecha:
- 6 de julio de 2023 - 10:18
- Visibilidad:
- Clave
- Centro:
- CP INF-PRI LOPE DE VEGA
- Duración:
- 02′ 08″
- Relación de aspecto:
- 1.53:1
- Resolución:
- 1098x720 píxeles
- Tamaño:
- 4.88 MBytes
