Search Result For pollution

Air Health in USA – level 1

05-08-2019 07:00

Scientists study air pollution. From 1999 to 2015, they...

Air Health in USA – level 2

05-08-2019 07:00

From 1999 until 2015, scientists studied concentrations of fine...

Air Health in USA – level 3

05-08-2019 07:00

A recently published study analysed concentrations of fine particulate...

World of Plastic – level 1

20-05-2019 15:00

Countries sign a new agreement. This agreement is about...

World of Plastic – level 2

20-05-2019 15:00

The Basel Convention took effect in 1989, and it...

World of Plastic – level 3

20-05-2019 15:00

In 1989, developed nations adopted a plan called the...

Asthma from Traffic – level 1

22-04-2019 07:00

Asthma is a medical problem. It makes it hard...

Asthma from Traffic – level 2

22-04-2019 07:00

Asthma is a medical condition where you can have...

Asthma from Traffic – level 3

22-04-2019 07:00

Asthma is a serious medical condition because it is...

Sea in Cambodia – level 3

14-03-2019 07:00

Scientists are surveying the ocean floor off of southern...