Calcium content: Calcium carbonate is the most prevalent calcium supplement in the market. It provides more elemental calcium than calcium citrate, so you may not need to take as many pills. As in the example explained in the elemental calcium section, a 500 mg calcium carbonate provides 200 mg elemental calcium.
In the Earth's atmosphere, temperature varies greatly at different heights relative to the Earth 's surface. The coldest temperatures lie near the mesopause, an area approximately 85 km (53 mi) to 100 km (62 mi) above the surface.n the Earth's atmosphere, temperature varies greatly at different heights relative to the Earth 's surface. The coldest temperatures lie near the mesopause, an area approximately 85 km (53 mi) to 100 km (62 mi) above the surface.
The relation between ground surface temperature and air temperature depends on the characteristics of the surface and on weather, particularly the amount of solar radiation. Normally, the mean annual air temperature (MAAT) is lower than the mean annual ground temperature (MAGT), the difference due mainly to the insulating effect of snow cover, although factors such as evaporation also affect it.