Which one are testable and non testable questions ? Does the temperature affect student performance?
How does the size of a helicopters blade length affect the speed and number of rotations?
Why does doing your homework help your grades?
Does the color of a surface affect it temperature?
Do flying saucers really exit?
Do larger or smaller seeds make prettier flowers?
Will larger or smaller seeds germinate faster?
Which planet is the most interesting to study?
What happens if you don't eat breakfast?
Where are whales found in the world?
How does talking to a plant affect a plants height?
Who do people smoke?
What types of apples grow in Missouri?
Are there more seeds in Fuji apples or Washington apples?

Walking is not the most exciting form of exercise a person can take on for fitness. yet it is low impact and requires no fancy equipment. that makes walking a simple activity for those new to exercise. walking is less likely than other exercises to cause injury to leg tendons and muscles. all it requires is a good pair of sneakers-no cables, stylish outfits, or weights required. of course, a person could increase the benefit of a workout by adding weights or speed walking. identify the main idea of this paragraph. walking is a difficult and safe exercise for beginners. walking is an easy and safe exercise for beginners. walking is a boring and dangerous form of exercise. walking is an exciting and very effective form of exercise.