Direction: Tell whether the relationship is positive or negative.
1. The more time is spent in studying lessons, the higher is the average grade of Nelson.
2. If the population of fox in a forest increases, the number of deer decreases. 3. The more students enroll in school, the more teachers are needed.
4. As a person ages, his/her memory decreases.
5. The more workers are hired to paint the whole school, the sooner the job is done.
6. As the weather gets colder, air conditioning costs decrease.
7. The more you exercise your muscles, the stronger they get.
8. As you eat more antioxidants, your immune system improves.
9. As a tadpole gets older, its tail gets smaller.
10. Taller people have larger shoe sizes and shorter people have smaller shoe sizes.​