Here's why:

* Diversity: Angiosperms are the most diverse group of plants, with over 300,000 species identified. They include everything from grasses and wildflowers to trees and vines.

* Abundance: They are found in nearly every terrestrial habitat, from tropical rainforests to deserts and grasslands.

* Ecological Importance: Angiosperms play a crucial role in ecosystems by providing food and shelter for animals, regulating climate, and contributing to soil formation.

* Economic Importance: They provide us with essential resources like food (grains, fruits, vegetables), timber, and medicine.

While other plant groups like gymnosperms (conifers, cycads) and ferns are important, angiosperms are the dominant group in terms of species diversity, abundance, and ecological influence.