Answer:
In 1940, Florey carried out vital experiments, showing that penicillin could protect mice against infection from deadly Streptococci.
penicillin could protect mice against infection from deadly Streptococci.
Explanation:
snow,sleet is the answer
6
To determine the number of neutrons we round 10.8 to 11 and subtract the atomic number (5) and get 6; therefore, boron has 6 neutrons.
18
12*3=36
36/2=18
567890
B. weathering
or erosion
E i think
