Name some natural materials with antimicrobial properties. Thank you!
amna
Asked:
December 2022
An elevator descends into a mine shaft at the rate of 7m per minute .If it descent starts from 20 m above the ground level ,find the time taken by the elevator to reach -400m.
paragraph on ''the value of discipline in our life''
amna
Asked:
December 2022
Why is burning of magnesium ribbon an example of combustion, but oxidation of aluminun foil is not an example of combustion?