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Which is the longest river in the world?
Nile
It's is the longest and narrowest country in the world and it's in South America. Which country is it?
Chile
Mariana Trench is the d_ _ _ _ _ _ part in the Pacific Ocean.
deepest
P _ _ _ _ _ _ _ is very small plants and animals that live in the sea and eaten by the fish.
Plankton
Which animal can run faster, a leopard or a cheetah?
Cheetah
This animal has a very good memory for faces and places. What is it?
Elephant
This kind of bird is tiny and its heart beats the quickest of any animal, more than a thousand time a minute.
Hummingbird
Which has higher frequency, red light or blue light?
Blue light
It belongs to the cat family. It has yellow fur with black spots. It's stronger and heavier than a cheetah.
Leopard
It's a bird with large eyes. It hunts small animals at night. People say this bird is very wide.
Owl
This grey mammal lives in the sea and is known for its playfulness.
Dolphins
This large fish has sharp teeth and can be extremely dangerous.
Shark
