Is this earth getting heavier due to plant growth on it with photosynthesis converting energy into mass.

Is this earth getting heavier due to plant growth on it with photosynthesis converting energy into mass. And if so, does this affect the earth’s spin?

We have actually looked at this in the past and the answer is actually, yes. Because E=mc2 Einstein’s famous equation, (E) energy equals (m) mass times (c) the speed of light squared. So, if you increase the energy in the system then the mass must also increase. The sun is adding energy to the earth’s system in the form of chemical, -comes in this light and is converted into chemical energy by photosynthesis. Therefore, the earth is gaining a little bit of weight in the form of the entrapment of that energy as plant chemistry. But, compared with the 40,000 tons of dust and stuff that rains in on earth from space every year, it’s probably quite literally a drop in the ocean. It’s all a balance because the earth’s temperature isn’t going up or down dramatically, a little bit. But I think on the whole, the earth is gaining a bit of weight in plants in the biosphere because of the energy coming from the sun, I would say.