The answer to this question is <span>when two variables are correlated, we cannot be sure what is causing the correlation.
For example, let's there is a study that found an increase in consumption in tofu lead to an increase in breast cancer.
Even if it's true that those two really correlated (let's just assume it), we wouldn't be able to know why it is correlated without further researches.</span>
A boon. A boon is a thing that is helpful or beneficial.
It lead to new practices like Christianity, Muslim etc all types of religion. Free practice
Explanation:
Modern period table has 18 groups and 7 periods.
Hope it will help :)