A. ozone accumulation
B. ozone depletion
C. acid rain
D. allergens
Related MCQs:
Shoe was thrown at Nawaz Sharif on March 11, 2018 at ______________?
The study of cancer is called_____________?
The outermost layer of skin is called__________?
The first artificial satellite on earth is ______________?
Guidance removes:______________?
The presidency of Abraham Lincoln began on ______________, when he was inaugurated as the 16th President of the United States?
Antheridia and archegonia are born on ______________ in bryophytes.
Fog in the forms of warm rain falls into a cold layer of surface air is called ______________?
The sun is made up of 99.9% of ________________ and ______________?
Which of the following metal occurs in free state ______________?
The Graetz bridge makes excellent use of ______________?
PSR J0108-1431 is the closest known ______________ to Earth?