Me i'm trying to figure this out but, i don't really know what this means. 1. how does the color of light affect how fast algae grow? a. independent varible b. depending varible c. controlled variable 2. how does the color of light affect how fast algae grow? a. independent variable b. dependent variable c. contolled varible 3. how does the color of light affect how fast algae grow? a. independent variable b. dependent varible c. controlled variable 4. how does the amount of salt in water affect the numbers of plants that grow in the water? a. independent variable b. dependent variable c. controlled variable 5. how does the amount of salt in the water affect the number of plants that grow in the water? a. independent variable b. dependent variable c. controlled variable 6. how does the amount of salt in the water affect the number of plants that grow in the water? a. independent variable b. dependent variable c. contolled variable