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Hello class, we are going to learn about the ecosystems in this unit.

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So first of all, I want you to answer a question.

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And this is the question.

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Do all the animals have the same needs?

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Looking at these pictures, you have the first picture, two penguins.

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And the second picture, a snake.

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So what do you think about this?

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Do they need the same things?

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We can see the penguins are in a very cold place because we can see snow.

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And the snake is not in a really cold place so you can see the grass.

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So maybe they don't need the same things.

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Therefore, we are going to ask, what is an ecosystem?

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Well, an ecosystem is made up of all the living things and all the non-living components that function together in one place.

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This means, guys, that the ecosystem is made up of all the living things and all the non-living components that function together in one place.

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What is this?

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The living things, for example, an eagle, a rabbit, a deer, and the non-living components can be air, water, rocks.

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And all that comes together to make the mountain and to make the ecosystem with the animals and the rocks and everything.

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Otherwise, you can't say it's an ecosystem.

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It's a set of things.

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So, an ecosystem is made up of a community of living things in a physical environment.

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As you see, it's living things in physical environment.

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So, what is the physical environment?

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The physical environment is made up of non-living things and non-living components.

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This is very important, guys, that you understand that the physical environment is not with the animals.

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The animals get into the physical environment and then create the ecosystem, as you can see in the book.

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So, here we have it very well, which is ecosystem equals living thing plus non-living things in one place.

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The ecosystem is made up of living things, as it can be plants, pine, bushes, animals like bird, fish, mammals, and non-living things in physical environment.

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Weather, water, type of soil and rocks, light, humidity, etc.

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So, then we have here the ecosystem of the ocean, the ecosystem of the mountain, the ecosystem of the desert.

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So, type of physical environment, we have terrestrial and aquatic.

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In terrestrial, we're going to have the forest ecosystem, the grassland ecosystem, and the desert ecosystem.

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And in aquatic environments, we're going to have freshwater ecosystem, rivers and lakes, and saltwater ecosystems, sea and oceans.

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There's a very big difference between them and between those two.

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So, guys, we have terrestrial and aquatic.

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So, in terrestrial, we have three types, and in aquatic, two.

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These two are very important to differentiate because one is freshwater and the other is saltwater.

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Remember that there are animals that live in the sea that don't live in rivers.

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So, you have to remember that.

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Living things.

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Every ecosystem has a particular fauna and flora.

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Do you remember what is a fauna and what is a flora?

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Here is a tip.

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Flora, for me, it reminds me of flora.

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Flora reminds me of flora.

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So, I remember that flora refers to all kinds of plants.

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And fauna, if you remember, we have a park in Madrid called Faunia.

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It's for animals, for example, but fauna is for animals and flora is for plants.

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So, an ecosystem.

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We have an organism, one type of species, a population that will be of all the species in the same place,

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a community that we have all populations in a place.

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So, we have here the orange fish, all the orange fishes, and here we have fishes that are orange and also are green.

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So, different in the same place.

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And then we have the fishes, green fishes, orange fishes, and maybe a shark here.

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So, all of these will be the ecosystem.

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Here you have a schema, so you can see the difference between ecosystems, living things, physical environment.

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I hope it's easier for you to learn it like that.

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And here is this picture.

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So, you can see the ecosystem population, then it has the community, and then the ecosystem.

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Here you can see, guys, in the drawing, that first is the population, then it has the community, and then it has the ecosystem.

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If there is no population, there can't be a community, and if there is no community, there can't be an ecosystem.

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Everything that is inside is necessary, each of its parts.

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Well, guys, this is it for today. I hope it has been useful for you.

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And then you can play the games to see if you have understood it well.