The negative stain is particularly useful for determining cell size and arrangement. It can also be used to stain cells that are too delicate to be heat-fixed. We use nigrosin as our negative stain. Nigrosin is an acidic stain.
To 2040 A.D. Until late 2006, global temperatures were more than a degree Fahrenheit warmer when compared to the 20th Century average. From August of 2007 through February of 2008, the Earthâs mean temperature dropped to near the 20th Century average of 57 degrees.
Temperatures on Earth typically range from 115 degrees Fahrenheit at the hottest to minus 100 degrees at the coolest. The Earth's approximate average temperature is 61... Temperatures on Earth typically range from 115 degrees Fahrenheit at the hottest to minus 100 degrees at the coolest. The Earth's approximate average temperature is 61 degrees. The hottest ever recorded air temperature on Earth was 134 degrees, which was recorded in 1913 in Death Valley, California. The highest recorded surface temperature was higher, reaching 159 degrees in the Lut Desert of Iran in 2004. Antarctica's Volstok Station holds the record for coldest temperature, reading minus 128.6 degrees in 1983.