Across
- 3. - this is the most complex organ in our body.
- 4. - organism which are invisible to the naked eye
- 7. - something the world waited a long time to get in times of COVID
Down
- 1. - if you do not fall sick often, you have strong....
- 2. - a bacteria that makes us excrete very often.
- 5. cord - what keeps us straight and standing.
- 6. - 2 sponge like organs protected in a cage