a solution is two substances that are evenly mixed together. One of them is called the solute and the other is the solvent. A solute is the substance to be dissolved (ex: sugar). The solvent is the one doing the dissolving (ex: water).
i learned this in science last year i hope this helped :)
Explanation:
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
You get 42 when you multiply 6 & 7.
The metric system is based on powers of 10 so it is much easier to convert units, often just by moving the decimal point.