“Lichens are among the first organisms to appear in a primary succession. These organisms live on rocks where they produce acids. ... F These acids cause the lichens to get larger.“ I got this from google
Answer:
declares standards for public health and writes policies to achieve those standards.
Explanation:
So basically you can be sitting down or whatever and then you put all the pressure from your stomach to your Anus
Asthma- A condition in which a person's airways become inflamed, narrow and swell, and produce extra mucus, which makes it difficult to breathe.
Asthma attack- Called an asthma exacerbation, the airways become swollen and inflamed. The muscles around the airways contract and the airways produce extra mucus, causing the breathing (bronchial) tubes to narrow.
During an attack, you may cough, wheeze and have trouble breathing. Symptoms of a minor asthma attack get better with prompt home treatment. A severe asthma attack that doesn't improve with home treatment can become a life-threatening emergency.
An acute exposure is a short term or brief exposure that may create an immediate health hazard.
