During this period, anthropogenic CO2 emissions amounted to about 20 % of the total CO2 emissions, yet the CO2 concentration levels increased by 50 %. (illconsidered.blogspot.ru)
These career focused courses concentrate on teaching student practical office skills such as assessing different written materials, scanning documents for key points and maintaining high concentration levels at all times. (dayjob.com)
Having that extra bit of protein is great for helping to keep blood sugar levels stable and keeping concentration levels on track. (mealplanningyourway.com)