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Leo tabu kweli
 
402. What is Carbon Footprint ?

A carbon footprint is defined as: The total amount of greenhouse gases produced to directly and indirectly support human activities, usually expressed in equivalent tons of carbon dioxide (CO2).
Typically, a carbon footprint is calculated by estimating not just the CO2 emissions that the activity in question causes, but also any emissions of other greenhouse gases (such as methane and nitrous oxide) and in some cases other types of climate impacts as well, such as vapour trails from aeroplanes.
 
[emoji124] [emoji124] [emoji124] Ujana ni maji ya moto,kesha niunguza nateketea...[emoji445] [emoji444] [emoji443] [emoji445] [emoji444] [emoji443] [emoji444] [emoji445]
[emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23]

CantstopwontStop
 
400. What is Geo Thermal Energy ?

Geothermal energy is the heat from the Earth. It's clean and sustainable. Resources of geothermal energyrange from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface, and down even deeper to the extremely high temperatures of molten rock called magma.
 
399. How does the baby breathe in uterus?

A baby does not need to breathe in the uterus. Everything that it needs for it's growth is provided to it by its supply line: the umbilical cord. This cord connect the blood circulation of child with mother. The foetus gets nutrition and oxygen through the umbilical cord. The waste products of the foetus are thrown out into the blood circulation of mother and are excreted by mother. After the birth of the baby, the umbilical cord is no longer required and cut off.
 
398. How is Glass made ?

Glass is made by melting together several minerals at very high temperatures. Silica in the form of sand is the main ingredient and this is combined with soda ash and limestone and melted in a furnace at temperatures of 1700°C. Other materials can be added to produce different colours or properties.
 
Under 18 utashindwa kusoma [emoji23] [emoji23] [emoji23] [emoji23]
[emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] [emoji23] mwambie poti akae mbali na mambo hayo
 
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