They should be limited to suit your needs not overdoing it or underdoing just to a healthy weight.
The cloud develops all of our memory in our phones and computers and stores it for later use
How the return of local wildlife in Namibia had improved the quality of the lives of the humans in the said area is through the increase of Tourism, which brought jobs for the locals. Mostly, these jobs are related to boosting the tourism and by taking care and promoting their area. The answer would be the last statement.
Density...
Fire bricks absorb many btu’s, so once heated up only a small flame is required to maintain that heat/temperature.
The fire brick composition is mostly materials like alumina silica sand, clay, not very porous.
