Put the verbs in brackets into the present simple:
1
... you (know) that camels have a third eyelid to protect their eyes from the blowing sand of the desert?
2
The male penguin ... (keep) the eggs warm and the female ... (hunt) for weeks.
3
Baby elephants ... (be) born blind and they ... (suck) their trunks as babies suck their thumbs.
4
Male lions ... (protect) their territory but ... (not hunt); the female ... (do) the hunting but the male ... (eat) first.
