‘There is no safe blood level, and lead can be harmful to human health – even at really, really low levels.’
1 trek • 0 pemutaran • 0 favorit
‘There is no safe blood level, and lead can be harmful to human health – even at really, really low levels.’
Letz83
0:003:59
Knowledge
Episode
1
‘There is no safe blood level, and lead can be harmful to human health – even at really, really low levels.’
Letz83