Abdul Hameed prepares a slide of onion peel but it has bubbles and is damaged as well, what might be the reason and why?
a. Rough handling of a peel
b. Use of water
c. Improper placement of coverslip
d. Both a & c

When does dna replication(make a copy of itself)?

During a hot day, warm and moist air rises and cools in the atmosphere. which even would occur next on such a day? a. condensed droplets would gather to become water vapor. b. water vapor would condense into tiny droplets. c. water droplets would evaporate to form rain and snow.

18. which statement about cancer is true?