1
00:00:00,920 --> 00:00:15,520
Pores, a flawless creation.

2
00:00:15,520 --> 00:00:20,400
The microscopic holes on the leaf surface are responsible for heat and water transfer and

3
00:00:20,400 --> 00:00:26,480
for obtaining the carbon dioxide required for photosynthesis from the atmosphere.

4
00:00:26,480 --> 00:00:33,600
These holes, known as pores, have a structure capable of opening and closing as necessary.

5
00:00:33,600 --> 00:00:38,160
When the pores are opened, the oxygen and water vapor between the leaf cells are exchanged

6
00:00:38,160 --> 00:00:42,660
for the carbon dioxide needed for photosynthesis.

7
00:00:42,660 --> 00:00:47,040
Production leftovers are thus expelled and substances that are needed are taken inside

8
00:00:47,040 --> 00:00:50,740
to be used.

9
00:00:50,740 --> 00:00:54,760
One of the interesting things about the pores is that they are generally found on the underside

10
00:00:54,760 --> 00:00:56,120
of leaves.

11
00:00:56,120 --> 00:01:02,020
This means that the negative effect of sunlight is reduced to the lowest level.

12
00:01:02,020 --> 00:01:06,900
If the pores, which expel water from the plant, were on the upper sides of leaves, then they

13
00:01:06,900 --> 00:01:13,400
would be exposed to sunlight for long periods of time.

14
00:01:13,400 --> 00:01:17,980
In that event, if the plant didn't die from the heat, the pores in its bodies would constantly

15
00:01:17,980 --> 00:01:24,900
give off water, meaning that the plant would die from excessive water loss instead.

16
00:01:24,900 --> 00:01:30,800
This special structure in the pores prevents the plant from being harmed by water loss.

17
00:01:30,800 --> 00:01:35,680
There is also a very fine detail in the structure of these pores, which have been specially arranged

18
00:01:35,680 --> 00:01:40,880
in the light of all the relevant factors in the external environment.

19
00:01:40,880 --> 00:01:46,780
We know that the external environment is constantly changing – humidity levels, temperature, gas

20
00:01:46,780 --> 00:01:48,780
levels, air pollution, etc.

21
00:01:48,780 --> 00:01:58,680
The structure of the pores in the leaves is such as to be able to adapt to all these variables.

22
00:01:58,680 --> 00:02:01,680
This can be illustrated by means of an example.

23
00:02:01,680 --> 00:02:06,580
In plants such as sugarcane and maize, which are exposed to high temperatures in dry air for

24
00:02:06,580 --> 00:02:12,800
long periods of time, the pores remain entirely or partly closed throughout the whole day in

25
00:02:12,800 --> 00:02:14,580
order to conserve water.

26
00:02:14,580 --> 00:02:22,900
But, these plants also have to absorb the carbon dioxide needed for photosynthesis in the daytime.

27
00:02:22,900 --> 00:02:28,860
Under normal circumstances, the pores should be wide open in order to permit this.

28
00:02:28,860 --> 00:02:33,980
However, this is impossible, because in that case, the plant would constantly lose water due

29
00:02:33,980 --> 00:02:37,720
to the fact that its pores were open and it would soon die.

30
00:02:37,720 --> 00:02:42,540
This means that the pores have to remain closed.

31
00:02:42,540 --> 00:02:46,460
But this difficulty has been overcome.

32
00:02:46,460 --> 00:02:51,540
Plants such as sugarcane and maize, that live in hot regions, use chemical pumps in order

33
00:02:51,540 --> 00:02:57,380
to be able to absorb carbon dioxide into their leaves, even if their pores are closed.

34
00:02:57,380 --> 00:03:02,200
If these chemical pumps were unable to function for a while, the plant would be unable to manufacture

35
00:03:02,200 --> 00:03:07,160
nutrients, since photosynthesis could not be performed, and it would therefore die.

36
00:03:07,160 --> 00:03:12,880
This shows the impossibility of these complex pumps in the leaves gradually coming into

37
00:03:12,880 --> 00:03:16,660
being by chance.

38
00:03:16,660 --> 00:03:21,540
Like all the others, this system in plants can only function when all of its components

39
00:03:21,540 --> 00:03:24,980
are fully present.

40
00:03:24,980 --> 00:03:32,220
Therefore, it is impossible for the pores in plants to have evolved by chance.

41
00:03:32,220 --> 00:03:38,100
These pores, with their very special structure, have been created by God in such a way as to

42
00:03:38,100 --> 00:03:39,220
fulfill the most delicate task.

43
00:03:39,220 --> 00:03:40,400
Time for the hours later and will be perceived immediately there.

44
00:03:40,400 --> 00:03:43,220
Familie

45
00:03:43,220 --> 00:03:45,140
Thai

46
00:03:45,140 --> 00:03:49,040
J

47
00:03:49,040 --> 00:03:49,440
Aj

48
00:03:49,440 --> 00:03:50,220
J

49
00:03:50,280 --> 00:03:50,940
Aj

50
00:03:50,940 --> 00:03:53,180
Aj

51
00:03:53,180 --> 00:03:53,700
Aj

52
00:03:53,700 --> 00:03:54,140
Aj

53
00:03:54,380 --> 00:03:54,560
Ugh

54
00:03:54,560 --> 00:03:56,140
Aj

55
00:03:56,140 --> 00:03:56,240
Aj

56
00:03:56,380 --> 00:03:57,140
Aj

57
00:03:57,140 --> 00:03:58,340
Aj

58
00:03:58,460 --> 00:03:59,320
Aj

59
00:03:59,320 --> 00:04:01,340
Aj

60
00:04:01,340 --> 00:04:02,420
Aj

61
00:04:03,140 --> 00:04:04,260
Aj

62
00:04:04,260 --> 00:04:05,180
Aj

63
00:04:05,180 --> 00:04:05,480
Aj

64
00:04:05,480 --> 00:04:06,240
Aj

65
00:04:06,360 --> 00:04:06,960
Aj

66
00:04:07,040 --> 00:04:09,100
Aj