At the international level, public health organizations underdeveloped and developing countries with poor public health.

which organization created global air-quality guidelines to keep air pollution in check?

a. peace corps
b. world health organization
c. international red cross and red crescent movement

So according to above explanation

B. World Health Organization, is the correct answer

his week a heat wave will be hitting, and most of the country will be experiencing temperatures above average for july. due to humidity, the temperature outside can feel even warmer than it actually is. this adjusted temperature, often referred to as the “feels like” temperature is called the heat index. the chart shows the heat index, which is calculated based on temperature and relative humidity. use this chart to answer the following questions.  

which ever one is showing doing the same exercise in time intervals such as 30 seconds or a minute several times.