結果 : air pollution criteria
9:25

Air Pollution

Bozeman Science
570,894 回視聴 - 8 年前
3:53

Air Pollution 101 | National Geographic

National Geographic
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11:09

six criterion air pollutants

Ryan Bell
7,614 回視聴 - 11 年前
7:45

Air pollution 101- Breathing deadly air

Let's Learn Public Health
628,694 回視聴 - 7 年前

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2:07

Types of air pollution

Harvard Online
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5:23

What’s in the air you breathe? - Amy Hrdina and Jesse Kroll

TED-Ed
362,386 回視聴 - 3 年前
3:09

What are WHO's new air quality guidelines?

The Hindu
15,632 回視聴 - 2 年前
3:43

World Health Organization toughens its air quality standards in 16 years | Air Pollution | WION

WION
2,366 回視聴 - 2 年前
1:01:48

Community Science Workshop: Air Quality Sensors II

CEEJH
89 回視聴 - 3 日前 に配信済み
43:06

Lecture 07: Sources and Classification of Air Pollutants

IIT Roorkee July 2018
17,317 回視聴 - 2 年前
5:00

Particulate matter air pollution

Harvard Online
45,624 回視聴 - 6 年前
2:07

No country met WHO air quality standards in 2021

Reuters
4,050 回視聴 - 2 年前
3:23

Meeting Ambient Air Quality Standards

California Air Resources Board
385 回視聴 - 5 か月前
5:31

Why air quality is getting worse in many places and how it puts human health at risk

PBS NewsHour
20,204 回視聴 - 5 か月前
5:21

Air Quality standards|Crieteria Air pollutants Air pollution | A-Z concepts guide

A-Z concepts guide
14,846 回視聴 - 2 年前
7:19

Monitoring Air Quality of Indian Cities : Simplified

Drishti IAS : English
7,345 回視聴 - 3 年前
3:02

How Indoor Air Quality Impacts Your Lungs

American Lung Association
40,581 回視聴 - 2 年前
3:36

How we measure air quality

EPA Victoria
79,450 回視聴 - 8 年前
1:44

New Air Quality Guidelines by World Health Organization

Devic Earth - Leader in Air Pollution Control Tech
125 回視聴 - 2 年前
3:10

Criteria Air Pollutants - Episode 4 (Air Pollution Engineering) | 52 PE Exam Problems in 52 Weeks

SIGMA Environmental, LLC
3,524 回視聴 - 7 年前