Some students find exams to be stressful. however, being worried about an upcoming exam may be a positive thing because it will cause the individual to study for the test as a way of relieving

Smoking damages the respiratory system by inhalation of a foreign substance, that is absorbed and residue is left behind on our lungs sponge like substance. the gas that is inhaled also increase your blood pressure and dilates your blood vessels. also the process of inhaling and exhaling the smoke it causes irritation to the throat and mouth. smoking can cause lung cancer and other respiratory and circulatory diseases. 

The fetus at this stage is curled up, almost doubled over, so remember to consider this as you draw the fetus the correct length