Iron-deficiency anemia can cause fatigue (tiredness), shortness of breath, chest pain, and other symptoms. Severe iron-deficiency anemia can lead to heart problems, infections, problems with growth and development in children, and other complications.
Semantics is the study of meaning. It is a wide subject within the general study of language. An understanding of semantics is essential to the study of language acquisition (how language users acquire a sense of meaning, as speakers and writers, listeners and readers) and of language change (how meanings alter over time).
Complete and Simple Subjects and Predicates. The simple subject is the main word or word group that tells whom or what the sentence is about. The complete subject consists of all the words that tell whom or what a sentence is about. SIMPLE SUBJECT The study of small insects is a hobby of mine.