Questions with the keyword 'harmful'

• Is there any way of destroying the harmful bacteria which could potentially harm the astronauts up in space? by Meriam.A to Steve, Shefali, Kevin, Katie, Floris, Delma Comments: (No comments so far )
• To Delma Childers,When and how did you come across the fact that some of the harmless bacteria on Earth multiply in by Kiri to Delma Comments: (No comments so far )