Pengarang: Dr Chana Gabay

When you think about bacteria, you might talk about bugs and dirt. But actually bacteria are useful. They’re really important to you and to your health, in fact, you can’t live without them! …

When you think about bacteria, you might talk about bugs and dirt. But actually bacteria are useful. They’re really important to you and to your health, in fact, you can’t live without them! …

When you think about bacteria, you might talk about bugs and dirt. But actually bacteria are useful. They’re really important to you and to your health, in fact, you can’t live without them! …

When you think about bacteria, you might talk about bugs and dirt. But actually bacteria are useful. They’re really important to you and to your health, in fact, you can’t live without them! …