Photosynthesis uses radiant energy from light converting it into . The process requires light, water, and to produce sugars. Oxygen is a byproduct. Life on earth depends on photosynthesis.

Explanation:

Photosynthesis is the process through which plants, some bacteria, and some others organisms  made their food by the use of  energy from sunlight and convert it into chemical energy to  produce sugar. The conversion of sunlight energy into usable chemical energy, is held by chlorophyll. The photosynthetic process uses water  as an electron donor and releases the oxygen.

The overall reaction of photosynthesis is:

6 molecules of water + 6 six molecules of carbon dioxide with the help of light, produce one molecule of sugar + six molecules of oxygen

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

5.6⋅10−^19  j

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