1. which city in the philippines is the safest place during the occurence of earthquake?
a.puerto princesa city
b.manila city
c.quezon city
d.naga city

2. what is the average typhoon that enter in the philippine are of responsibility?
a.25
b.20
c.15
d.10

3.what is the main reason that asteroids did not form as a planet?
a.due to lack of materials to form
b.due to the varied & irregular sizes
c.due to the jupiter strong gravity
d.none of the above

4.when was the next appearance of famous halley comet on earth?
a.2041
b.2061
c.2016
d.2051​