If people get fat, will the earth get heavier?

1, when people grow up, they eat vegetables and meat, and the food is plants. Animals with long meat eventually eat plants, so it can be considered that the creatures in the world come from plants.

How do plants grow up? Photosynthesis decomposes carbon dioxide in the air into carbon and oxygen, and carbon forms the skeleton of plants, which combines with water inhaled by plants to form carbohydrates-starch, cellulose, protein, fat, etc. It is eaten and absorbed by people and other animals (agricultural scientists study high-yield crops to find crops with higher conversion efficiency), and then these carbohydrates are decomposed by human breath and discharged together with inhaled oxygen to form carbon dioxide, and the cycle is repeated-the more people, the more.

Other elements needed by the human body, such as calcium and iron, only participate in this cycle, not out of nothing-the rise and fall of the biosphere is only the transfer of matter from one combination to another, and will not change the quality of the earth itself.

2. Even if human beings are made out of nothing, how much impact can it have? There are 5 billion people in the world, assuming that everyone weighs 100 kg (MM forgive me for making an analogy, but I really don't want to feed you as fat people), then the total mass is 500 million tons, accounting for 597.6 trillion tons of the total mass of the earth.

To study the mass change of the earth, it is necessary to look at the exchange between this system and this system: every year, many meteorites fall on the earth, which will lead to the increase of the mass of the earth (by the way, the burning of meteorites will consume gas, but the substances that make up the gas will not disappear, but will be combined into products after combustion)