2. Vitamin K providing the necessary impetus for the synthesis of at least two proteins involved in blood clotting.

3. The amount of red meat needed to provision sufficient protein for maintaining good health is estimated at less than four ounces per day.

4. With the development of underwater breathing equipment, helmeted divers can now descend six hundred foot if they breathe a special mixture of gases.

5. Many environmentalists fear that the earth will run out essential natural resources before the end ofthe twentieth century.

 6. Neither oil drilling or gas exploration can be prevented from steadily changing the face of the arctic.

7. Improper waste disposal spreads disease, contaminates water sources and provide breeding grounds for disease-carrying insects.

8. When Anderson looked at the station clock, it is ten to two.

9. The bigger of three daily meals for most American families is dinner

10. When you were in love, the neurons in your brain are releasing dopamine.