They recycle. =P
Depending on the availability of water you can plant cucurbits, legumes and many flowering plants seeds.
genetic determines ultimate plant height, but water availability (as well as other geographical or climatological factors) can limit or expedite it.
Oxygen .
soil humidity, air humidity, soil structure, pH, nutrients availability, temp,
Depends on the variety or cultivar of tomato, the growth stage of the plant, fertilizer and water availability and light availability. When young a tomato will grow at about 5 - 8 cm per week, as it matures the plant growth both in height and in spread to about 20 - 25 cm per week.
Weeds are considered invasive species. They "steal" valuable nutrients and resources from the grass. The major hindrance to plant growth is availability of nitrogen. There is only so much fixed nitrogen to go around.
Availability of water
my thoughts are this a plant has a specific volume need for water it can vary based on availability of sunlight and how much room the roots have to grow as well as species type and place of origin. To much water can often kill a plant as surely as not enough. If your plant isn't growing and it is not waterlogged or deprived of sunlight (which it needs to effectively fuel its use of the water and soil nutrients) check if its roots are cramped or the water may have a substance that kills the plant.
Nutrients, soil properties, light, water availability, the presence of herbivores, pathogens, parasites, and mutualists
the availability of water power.
In several ways but mainly by their food supplies and water availability, generally speaking. That's why you have regions of the earth that are barren....no food (nutrients) in the soil and/or no available water to carry the food into the plant.
Water availability is more of a concern so they can have enough water for the people and agricultural things.