Answer:
An aphthous ulcer is an ulcer that forms on the mucous membranes. They are also called aphthae, aphthosis, aphthous stomatitis and canker sores. ... Recurrent aphthous ulcers are mostly a minor nuisance, but they are associated with significant health problems in some people.
Pets or neighbors idk its either one
A. Working out in the morning is more effective...
<span>the ability of the heart and lungs to supply oxygen to the body</span>
