Usually the y-axis stands for dependent variable while the x-axis stands for independent variable. And the curve stands for the relationship between the two variables. The control variable and measurement variable often means the independent variables.
That students who study make better grades than those who do not.
Answer:
To turn sugars into energy
Explanation:

- Mitochondria are main sites of aerobic respiration. They are miniature biochemical factories where food stuffs are completely oxidised to carbon dioxide and water.
- The energy (ATP) produced in the mitochondria helps to perform various energy requiring processes.
- Because of the formation of ATP in mitochondria it is called power house of the cell.

- Photosynthesis: Light reaction (in thylakoids), Dark reaction (in stroma).
- Storage of starch.
Answer:
El tejido óseo sirve como depósito y fuente de calcio para estas necesidades metabólicas críticas a través del proceso de remodelación ósea. El metabolismo del calcio está regulado en gran parte por el sistema endocrino de la hormona paratiroidea (PTH) -vitamina D, que se caracteriza por una serie de circuitos de retroalimentación homeostática.
Explanation:
Glucose is used by plants for energy and to make other substances like cellulose and starch.