Typhoons tend to pass east to west across the Philippine archipelago. Affecting mostly the northern most group of islands (Leyte to Luzon)
Stone tools we’re first used around 3,300 BCE
It is A: Uracil
DNA and RNA is my favorite subject in Biology and Anatomy
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
