Yes, that's were they get there name from.
Yes, catfish in the Nile river do swim upside down.
Yes. There are a lot of nile crocodiles and even hippos inside!
yes.
Swim, fish, cruise etc
Swim, wash, drink and boat ride
Yes, swimming in the Tigris is technically possible, and on hot days, Iraqi men may choose to cool off in the river. But there are no beaches or swimming tourism on the river. The water is polluted and water levels are low.
Egypt
it helped by giving food (crocodiles) it also helped by giving them water to drink, swim, and bathe in.
probably not. im not so sure though.....
A Crocodile.
Impossible to answer exactly as the river flows over 4,000 miles, through numerous countries and tens of millions use it. Amongst the things done for fun would be fishing, swimming, sightseeing, boating etc.
A lion can surely win in a fight with a crocodile if it clawed and digged its sharp nails in the crocodile. A lion can only kill a crocodile if the crocodile is too weak to fight or is in a situation that is vulnerable to the lion.