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Effects of human activity

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Subido el 21 de febrero de 2018 por Sergio G.

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Good morning, I am Ivan and we are going to talk about people in the environment. 00:00:00
Concretely, we are going to talk about pollution, desertification, deforestation and the endangered species. 00:00:27
Pollution is the accumulation of rubies and harmful substances in the air, water and soil. 00:00:37
Global warming is the increase of temperatures on the planet, produced by expulsion of gases 00:00:49
from vehicles, air-tube systems, and the gases that some industries release into the atmosphere. 00:00:57
The gases retain heat. All this is produced by what is known as the air pollution. 00:01:11
Accumulation of rubies from human activity can contaminate the soil and is called soil pollution. 00:01:50
Soils. 00:02:25
Detergents. 00:02:27
industrial waste and chemicals used in agriculture can contaminate bodies of water. 00:02:28
This is called water pollution. 00:02:39
Deforestation and desertification 00:02:42
Deforestation refers to the disappearance of forests. 00:03:07
It can happen through forest fires or because people cut down too many trees. 00:03:12
Deforestation laves the soil unprotected against erosion. 00:03:22
It also trains the animals that depend on trees. 00:03:30
Desertification is the slow transformation of fertile land into a desert. 00:03:37
It usually happens as a consequence of deforestation. 00:03:51
Sowing with no vegetation can be easily eroded. 00:03:58
This means that water and wind carry away the fertile layer of soil. 00:04:05
The consequence of pollution, deforestation and desertification is the extinction of species. 00:04:13
Endocrine species 00:04:24
Endocrine species are living things at risk of becoming extinct. 00:04:26
Extinction is the complete disappearance of a species from the earth. Pollution, deforestation and overexploitation are trees to many species of animals and plants. 00:04:33
The extinction of a species causes serious consequences to the ecosystem. 00:04:53
It affects all the other living things within that ecosystem. 00:05:01
For example, if producers in an ecosystem become extinct, 00:05:11
Consumers will not be able to obtain food. Without food, these consumers will also become extinct. 00:05:18
Subido por:
Sergio G.
Licencia:
Todos los derechos reservados
Visualizaciones:
24
Fecha:
21 de febrero de 2018 - 12:12
Visibilidad:
Público
Centro:
CP INF-PRI EUGENIO MARIA DE HOSTOS
Duración:
06′ 04″
Relación de aspecto:
1.78:1
Resolución:
1280x720 píxeles
Tamaño:
236.40 MBytes

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