Yes, stimulating it with electrodes can potentially help improve mood and alleviate symptoms in those who suffer from treatment-resistant depression, among other ailments.
As you increase in altitude, there are fewer air molecules. Due to the lower amounts of air molecules, the atmospheric pressure decreases causing the air to be harder to breath in.
Molecule
cell tissue
organ
organ system
organism
population
community
ecosystem
biosphere.
Hope this helps!
There are three general ways to present data and these are:
[1] Textual Method
[2] Tabular Method
[3] Graphical Method
Since Dr. Peterson has to present the medicinal properties of some plants, analytical values are not available, only accounts and qualitative results. The Graphical Method would not apply. Therefore, the most logical way for Dr Peterson to present his research is through Tabular Method. He can make a table listing down all the plants each with a description of their medicinal properties.