Put your tools into the steamer, close the lid on the pot, and put the pot on a flame to boil. After sterilizing tools, let them dry. Do not touch them, or they will not be sterile anymore! Use sterilized tongs, chopsticks, or spoons to pick the tools out of the pot. Move them directly to a sterilized container.
Overall, the global annual temperature has increased at an average rate of 0.07Â°C (0.13Â°F) per decade since 1880 and at an average rate of 0.17Â°C (0.31Â°F) per decade since 1970. [NOAA global analysis for 2016 accessed March 6, 2017].
Earth's atmosphere also play a vital role in regulating the temperature by providing a blanket of gases that not only protects us from excessive heat and harmful radiation from the sun, but also traps heat rising from the Earth's interior, keeping us warm. The average temperature on Earth is about 61 degrees F (16 C). But temperatures vary greatly around the world depending on the time of year, ocean and wind currents and weather conditions. Summers tend to be warmer and winters colder. Also, temperatures tend to be higher near the equator and lower near the poles. Temperature extremes