Incomplete, you wouldn't want to start a sentence with a preposition.
It would be easy to answer your question if it was complete. What is this process called ? seems to be an incomplete question. Which process you are talking about? There are many processes in this world of Biology.
Gaseous exchange is a natural process, ventilation is a forced process.
A sentence fragment is a group of words that does not express a complete thought and cannot stand alone as a complete sentence. It often lacks a subject, a verb, or both, making it incomplete. For example, "Although I was tired" is a fragment because it leaves the reader expecting additional information. Fragments can be corrected by attaching them to a complete sentence or by adding the missing elements.
INcomplete
incomplete, undone, unfinished, unperfected
incomplete
is datura complete or incomplete flower
Incomplete Metamorphosis
incomplete
incomplete
Incomplete
marigold is an incomplete flower.
complete metamorphosis
Incomplete
incomplete
incomplete