Question

how to you prove that co2 is necessary for photosynthesis ​

Answer 1

seo2 is very important for photosynthesis because the leaves present chloroplast and stomata the basically stomata enter only Co2 gas

Answer 2

potassium hydroxide in the flask absorbs carbon dioxide this due to the absence of co2 the leafe fail to produce strach.this will prove co2 is essential for photosynthesis