someone had throw a orange away and it started to grow this is the start of photosynthesis , as it grew it took in CO2 , water , sunlight , and made its own food called glucose. under the leaves are tiny holes where CO2 is collected called stomata.
Water , sunlight , and CO2 is all raw materials for the plant every plant does this. Animal or a heterotroph don´t make their own food , but plants or autotrophs do.
The plant takes in the water from the roots the roots are found in soil , and plants clean the air by taking in CO2. Sunlight causes a chemical reaction with the chloroplast. chlorophyll is a green pigment found in the chloroplast , and lastly oxygen is a waste product.