because it just is!
Air plants are plants from the family Tillandsia. These plants grow in wet environments and do not need soil to grow and instead take up all the nutrients they need from water in the air, hence their...
they grow without being rooted in soil or water
Plant are called "plants" because they are the only living things that can make food in their own cells, using energy from the Sun.
Because they are carnivores. They eat anmals not the food they produce.