C4 pathway A pathway of carbon fixation, found most commonly in tropical plants that have high rates of growth and photosynthesis and that are adapted to high temperatures, strong light, low carbon dioxide levels, and low water supply. Its importance lies mainly in its reduction of photorespiration.
PT 100 RTD means Resistance temperature detector(RTD) of platinum with 100 ohms resistance at zero degree centigrade.
BREAKING DOWN 'Cooling Degree Day-CDD'. To calculate the CDD, take the average of a day's high and low and subtract 65. For example, if the day's average temperature is 80 o F, its CDD is 15.If everyday in a 30 day month had an average temperature of 80 o F, the month's CDD value would be 450 (15 x 30).REAKING DOWN 'Cooling Degree Day-CDD'. To calculate the CDD, take the average of a day's high and low and subtract 65. For example, if the day's average temperature is 80 o F, its CDD is 15.