Cách sử dụng
Ragweed is a type of plant that grows in many parts of the world. It releases pollen into the air during the fall season, which can cause allergies and make people sneeze, have itchy eyes or a runny nose. It's important to know about ragweed if you have allergies or live in an area where it grows a lot. For example, you might hear someone say "I can't go outside today because the ragweed is really bad".