1. Explain how stress affects a fetus. List the teratogens and toxins that threaten a developing fetus.2. Briefly explain brain development in infancy – be sure to comment on something you might have not known after you watch all videos. Use 3 Quotes ( one from each video and comment on each video in your answer).https://youtu.be/fKyljukBE70https://youtu.be/EFbnU_O9ZEMhttps://youtu.be/1d1naM559w4