Answer:
Heat is a measure of the flow of thermal energy from one object or substance to another. ... Thermal energy typically flows from a warmer material to a cooler material. Generally, when thermal energy is transferred to a material, the motion of its particles speeds up and its temperature increases.
Explanation:
Oxygen is a by-product of photosynthesis thus it is not needed for photosynthesis to occur.
Light is needed to provide the energy needed as photosynthesis is endothermic and is also needed to ionise the water molecule to get hydroxide and hydrogen ions and carbon dioxide is what is reduced to starch.
Answer:
hydrogen 2 carbon oxygen hydrogen 2
It is harmful because you can get burned easy and your clothes can get dirty.