factor

01. Environmental pollution seems to be an important [factor] in the increase in cancers all over the world.

02. Regular physical exercise is an essential [factor] in the maintenance of good health.

03. Carl fears that race may have been a [factor] in the company's decision not to promote him.

04. Children going outside in the bright sun should wear sunblock with a [factor] of at least 15.

05. Alcohol was a major [factor] in a car accident which claimed three lives over the weekend.

06. A parent who smokes is apparently an important [factor] in the development of ear infections among small children.

07. Warmer than average weather was the deciding [factor] in our decision to postpone our ski trip.

08. The icy roads were definitely a [factor] in the car accident.

09. Driving under the influence of alcohol is a major [factor] in many automobile accidents.

10. Many [factors] contributed to my bad marks at school.

11. William Feather once said that people who delay action until all [factors] are favorable do nothing.

12. Tony Robbins once stated that job dissatisfaction is the number one [factor] in whether you survive your first heart attack.

13. Scientists say there are no differences in lab animals and humans that cannot be [factored] into tests.

14. The weight of the world's insect population exceeds that of humankind by a [factor] of twelve.

15. One of the most important risk [factors] for breast cancer is age.

16. Eating disorders appear to be caused by emotional and psychological [factors].

17. You, the language learner, are the most important [factor] in the language learning process.

18. Tobacco leaves are graded by [factors] such as color, size, and position on the stem because lower leaves have less nicotine.

19. Shared customs, beliefs and values, class and race, and political and religious [factors] all influence the thoughts and actions of group members.

20. Research by Leki and Carson has shown that second language learners see lack of vocabulary as the major [factor] affecting the quality of their writing.

21. Our salaries have increased a bit, but if the cost of living is [factored] in, our real wages have actually gone down.

22. You can't measure the effect of your salary increase without [factoring] in the increase in the cost of living.

23. The physical evolution of our planet's landscape is a complex process which is influenced by many [factors], including climate, rock type, structure and elevation.