A second type of airborne allergy called perennial allergic rhinitis occurs year-round and is more likely due to indoor allergens such as pet dander or dust mites
Allergy is a hypersensitive elicitation of immune response of body upon exposed to some allergens.
it is perennial
A perennial is a perennial no matter where it is grown.
A parallel relationship with something, like pollen and allergy, dog and barking, wind and storm.
Perennial
perennial
Allergy is a hypersensitive elicitation of immune response of body upon exposed to some allergens.
It has more than one meaning: 1) Lasting 3 or more seasons 2) Recurring again and again
Perennial
A tender perennial is a perennial plant that is not hardy in cold climates.
Perennial
Basil is an annual, not a perennial.