Describe the four components of language.2. Describe developments occurring in the first year of life that contribute to language development.3. Describe research on speech perception in infancy and explain how these findings are related to the concept of fine-tuning.4. Describe the sequence of semantic development; explain what is meant by naming explosion, fast-mapping, underextension and overextension.5. What kinds of constraints on word names do children use when learning new words