1
00:00:00,620 --> 00:00:20,839
So, that was the clay, the leather, the wool, the wood. All that is natural materials, okay? We get these materials from the nature, but there are other materials that are man-made.

2
00:00:20,839 --> 00:00:22,460
Do you remember what is my name?

3
00:00:24,179 --> 00:00:27,160
Very good.

4
00:00:27,839 --> 00:00:29,440
For example, the plastic.

5
00:00:31,899 --> 00:00:34,020
The plastic is in the nature.

6
00:00:35,719 --> 00:00:42,259
Now, we use oil to make the plastic.

7
00:00:42,799 --> 00:00:42,939
Okay?

8
00:00:43,460 --> 00:00:45,420
The plastic is made with oil.

9
00:00:46,479 --> 00:00:48,159
And for example, the glass.

10
00:00:48,159 --> 00:00:53,159
Glass is in the nature, but it's not like we know.

11
00:00:53,159 --> 00:00:57,159
We need something to transform into glass.

12
00:00:57,159 --> 00:00:58,159
Sand.

13
00:00:58,159 --> 00:01:00,159
Sand, very good.

14
00:01:00,159 --> 00:01:02,159
So we use sand.

15
00:01:02,159 --> 00:01:06,159
We transform the sand into glass.

16
00:01:06,159 --> 00:01:09,159
It's a kind of flour.

17
00:01:09,159 --> 00:01:11,159
So with the sand we can make glass.

18
00:01:11,159 --> 00:01:18,260
It's not exactly in man-made, but it's not in the nature, okay?

19
00:01:18,700 --> 00:01:21,659
We cannot go to the nature and find glass.

20
00:01:22,900 --> 00:01:24,700
And what's the other one?

21
00:01:24,900 --> 00:01:25,260
Metal.

22
00:01:25,920 --> 00:01:27,019
Metal, okay.

23
00:01:27,980 --> 00:01:34,840
We use minerals to make metal.

24
00:01:36,840 --> 00:01:37,560
Yes?

25
00:01:37,560 --> 00:02:06,140
And what happens then with the cotton? Is man-made or is it natural? It's natural. It's natural material. Okay. For example, a plastic bottle. A plastic bottle. Like this. Is man-made or natural? It's plastic. So it's a man-made material.

26
00:02:07,560 --> 00:02:12,560
Mm-hmm.