How do some plants grow in nutrient-poor soils?

Some plants, like carnivorous species (e.g., Venus flytraps) or epiphytes (e.g., orchids), have evolved strategies to thrive in nutrient-poor soils. Carnivorous plants obtain nutrients, particularly nitrogen, by trapping and digesting insects. Epiphytes grow on other plants and extract moisture and nutrients from the air or rain, rather than from the soil. Other plants, like certain grasses, have deep or expansive root systems that can access hidden nutrients or break down organic matter in the soil.