Please answer at least 10 of them if not all. I will give Brainliest, 5 stars , and Thanks to the best answer. No scams nor useless answers. Pls, help me. This is due in 30 minutes!! 1. Explain the difference between independent variables and dependent variables.

2. Why should only one independent variable be used in an experiment?

3. Explain the difference between experimental groups and control groups.

4. Explain how a prototype is used in the engineering design process.

5. What two methods can be used to make a deductive inference from a hypothetical proposition?

6. What is the method of difference? 7. Why can inductive reasoning never prove a hypothesis beyond all doubt?

7. Why can inductive reasoning never prove a hypothesis beyond all doubt?

8. Why is humus important? 9. What determines the texture of soil?

10. Explain the difference between sand, silt, and clay.

11. What factors affect soil color? 12. How does soil pH affect the growth of plants?

13. What primary plant food element is essential for cell division and promotes maturation?

14. Why are pore spaces in soil important to plants?

15. Why may soil above the water table still be damp?