Answer
A gland is an organ which produces and releases that perform a specific function in the body . Hormones are chemical substance that act like messenger molecules in the body.
Explanation:
When you gain awareness, knowledge, and build health skills, you are increasing your health literacy.
Has been shown to be invalid by research
A n environmental stressor could be;
the weather, too hot, say a heatwave, which can cause heat stroke, dehydration etc, or too cold, where vulnerable people may freeze to death, or develop frost bite etc.
So, some characteristic part of where we live which may, under certain conditions cause difficulty for us or some other living being.