The answer is variable. This is a vital part of any experiments and science projects this is basically any factor that can be controlled, changed, or measured in experimentation. Scientific experiments have quite a few types of variables. The independent variables are the ones frequently plotted on a chart or graph, but there are other kinds of variables you may come across like the dependent and controlled.
The cellular structure that performs a similar function would be the cell membrane.
Answer:
When the water gets too warm, the algae can no longer live inside corals, so they leave. The corals then turn from green to white, called coral bleaching. Climate change has been causing the Earth's air and oceans to get warmer. With warmer oceans, coral bleaching is becoming more widespread.
Explanation: