I BELIEVE the answer is D) 4.
Answer:
humanity has a 95% probability of being extinct in 7,800,000 years
The right answer is HEPA filter.
A HEPA filter (High Efficiency on Particles Air) can filter up to 99.97% of 0.3μ aerial particles.
These filters are used to clean the air and retain suspended particles (dust, pollen, bacteria etc.) and other particles that can cause respiratory allergy in sensitive subjects.
They are very used in sterile rooms
The answer is fusion of gametes via fertilization.
