Answer choices: atom x is a liquid and atom y is a solid
atom y has one more proton than atom x
atomy has one more neutron than atom x
atom x is a metal and atom y is a non-metal.

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

c-reactive protein (crp) is an acute phase protein belonging to pentraxin family of proteins, whose levels increases 1000-fold or more in concentration in blood during the occurrence of an injury, inflammation or tissue death.

i think the answer is

mass