C. Limbic system (key role in processing emotions)
1. External respiration exchanges gases between bloodstream and lungs
2. Internal respiration exchanges gases between bloodstream and body tissue.
3. Air vibrating in vocal cords causes sound
4. Olfaction.
Answer: 2. Bending of the arm
Explanation: The second answer choice is the only on that involves use of both the skeletal and muscular system.
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.
Answer:
The answer is True.
Explanation:
But still it varies from person to person. Not every healthy emotional person grow trust between one another. Some just rush towards friendship for their own purpose. So it depends!