Ascientist conducted an experiment to investigate the effect of radon cellular mutations. why is it important for another scientist to conduct the same scientific investigation independently? (1 point)
to verify the data to make the results stronger and more reliable
to ensure the popularity of the results so they will be accepted by the scientific community
to keep the scientific community competitive and motivated to continue finding new facts
to prove that the results are always different

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.