A. ozone accumulation
B. ozone depletion
C. acid rain
- Which of the following metal occurs in free state ______________?
- PSR J0108-1431 is the closest known ______________ to Earth?
- The World Cancer Day (WCD) is observed on_________?
- The first general elections in Pakistan were held on ______________?
- In human body, which can understand the spread of cancer within the body?
- Which among the following is responsible for producing color of human skin ___?
- Hydrogen peroxide (H2O2)______________?
- Fog in the forms of warm rain falls into a cold layer of surface air is called ______________?
- The first daughter of our Holy prophet (SAW) was ______________.
- The Paralympics is a competition for the ______________.
- Fear of darkness ______________?
- The Graetz bridge makes excellent use of ______________?