Answer:
Photons
Explanation:
A hot object emits photons of various energies, which propagate outwards from the object. When they hit another object, the photons can be absorbed, giving up their energy to the second object. This causes the atoms/molecules etc. to giggle around, rotate, vibrate etc., with the result that the second object heats up.
They are of the same period and are similar in some form
Answer : The temperature in degree Celsius is, 
Explanation :
The conversion used for the temperature from Kelvin to degree Celsius is:
where,
= temperature in Kelvin
= temperature in centigrade
As we are given the temperature in Kelvin is, 2.7
Now we have to determine the temperature in Kelvin.
Therefore, the temperature in degree Celsius is,
Answer:
There are multiple cycles in our world and here are some examples:
The nitrogen cycle. Nitrogen circulates between air, the soil and living things.
(Nitrogen fixation (N2 to NH3/ NH4+ or NO3-)
Nitrification (NH3 to NO3-)
Assimilation (Incorporation of NH3 and NO3- into biological tissues)
Ammonification (organic nitrogen compounds to NH3)
Denitrification(NO3- to N2)
The carbon cycle. Carbon dioxide circulates between the air, soil, and living things.
(Photosynthesis, Decomposition, Respiration and Combustion.)
Photosynthesis. This process followed by respiration recycles oxygen.
During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.
The water cycle.
( Step 1: Evaporation.
Step 2: Condensation.
Step 3: Sublimation.
Step 4: Precipitation.
Step 5: Transpiration.
Step 6: Runoff.
Step 7: Infiltration. )
Explanation:
