Answer:
The main difference between economic and non-economic activities lies in the fact that economic activities are carried out to fulfill human needs, whereas non-economic activities are carried out for psychological satisfaction.
Explanation:
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A. because the hormone secreted is parathormone which regulates the calcium in the blood.
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<span>The variables in this study would be the folic acid used (the independent variable) and the DNA formed through the implementation (the dependent variable). By changing the amount of folic acid used in the experiment, the DNA will possibly be changed in the microbes.</span>
They cannot hibernate in winter