If you only want to balance nuclear reactions, then you should know that number of nucleons are conserved before and after nuclear reaction. Also, charge is conserved as well. Other things which are conserved in a nuclear reaction are: Conservation of: 1. Parity 2. Spin 3. angular momentum(vector sum of intrinsic spin and orbital angular momentum) 4. linear momentum 5. Isotopic spin 6. Energy
plants use carbondioxide, water and sunlight to produce their food through photosynthesis so in return they produce oxygen into the air as by product and glucose