Etiqueta: Patricia J Murphy

An introduction to the concept of hygiene, or staying clean. Topics covered include taking care of cuts to prevent infection, brushing teeth to avoid tooth decay, washing hands to avoid illnesses like influenza and colds, and taking baths to maintain proper hygiene.

How do scientists learn about space? They ask questions! Now with bilingual text, find the answers to questions such as: What is a black hole? and Why do astronauts go into space?