Answer:
People's homes might have not been built with electricity.
Explanation:
Nikola Tesla is the inventor that made electricity efficient and practical. Before his invention of alternating current, we relied on Edison's direct current, which was both dangerous and ineffective. (Important fact: Edison did not invent the light bulb!)
"A. Mutations" is a factor in how a species can change over time. Natural selection selects these random mutations for survival based on how fit they make their host to the environment.
To calculate the mean all you have to do is add all the numbers from the data set and then divide the answer between the number of data set. For example, if you data set is 2,3,4,5,6,then you add 2+3+4+5+6=20 Now you divide 20 between the total number of data, so from 2 to 6 you have 5 numbers. You divide 20/5 and that that is equal to 4.
Since you did not post your data set I can not tell you exactly the answer but you can use this information to walk you through it.
An antibody, because antibodies are produced for a specific virus and are unique to that virus, that protein is the response to influenza.
