The 1st one. Fertilizers are like food for plants, and that's what an algae is, sorta. Trout's don't eat algae and if there's too much algae around, it gets dirty and they eventually die because of the amount of bacteria in the algae. It's the same thing if you have a fish tank.
Answer:
Dependent variable: If calcium is given, then bone strength will increase.
Explanation:
Chemical property. Chemical property refers to the characteristic changed
You didn’t put a diagram up