Which physical factors would have the GREATEST effect on the types of plants that could thrive in an ecosystem?

The greatest physical factors affecting plant types in an ecosystem include soil type, water availability, and climate conditions (temperature and precipitation). Soil composition influences nutrient availability and drainage, while water availability determines moisture levels essential for plant growth. Climate conditions dictate the growing season and temperature ranges that specific plants can tolerate. Together, these factors create unique habitats that support diverse plant communities.