Our plants depend on a number of factors to survive. Some abiotic factors are the temperature, water, and weather. Some biotic factors are animals, bacteria, and other plants. I know that our plants are in competition because there are other plants all around it. When other plants are around a plant they all will be in competition for sunlight, water, and space. The "losing" plants will failing to survive. Plants also interact with insects by providing food for the insects and the insects spread the plants pollen by flying from one plants to another. The way we know that succession is occurring is that the plants are growing and it is secondary succession.