facts Quiz
Question Number 1
sharks have to continuesly swim because:
A. the have no air bladder and they will sink
B. to catch food
C. to clean themselves
D. to run from enemies
Question Number 2
first kind of lasers invented were
A. wave
B. helium-neon
C. electromagnetic
D. infra red
Question Number 3
we see ourselves in mirror because of
A. refraction
B. reflection
C. it is magic
D. none
Question Number 4
largest organ of our body is
A. small intenstine
B. liver
C. stomach
D. skin
Question Number 5
how long does a tortoise live
A. 100-160 yrs
B. 50-60 yrs
C. 1000 yrs
D. 1500 yrs