Well, plants go through a phase Called photosynthesis. They take in sunlight, carbon dioxide (our exhale), and water to make sugar. Sugar is their supply of food, and the waste they make. It's oxygen (what we inhale)
Twins share the same genes, but siblings born at different time does not share the same genes.
The correct answer would be Biomass. Biomass is the term for the total amount of living matter in each trophic level of an ecological pyramid. In other words, biomass is considered as the total mass of an organism in a given area.
The answer is photosynthesis. Hope that helps :)