*Question*
If melting does not change mass, then what does melting not change? Answer choices: - energy - vapors - fats - mass - liquid - ligt - heat - copper
**Answer**
mass

*Question*
If running H2O dissolves oxygen better than standing H2O, then what dissolves oxygen better when running than standing? Answer choices: - H2O - NaCl - pH - CO2 - CO 2 - O2 - O3 - H20
**Answer**
H2O

*Question*
If alack of water can change the color of an environment from green to brown, then what can change the color of an environment from green to brown? Answer choices: - lack of water - clouds - trees - increased h2o - climate - deforestation - burning - Greenhouse gases
**Answer**
lack of water

*Question*
If trees have secondary growth, then what has secondary growth? Answer choices: - viscosity - plants - oak - density - ferns - primary - trees - leaves
**Answer**
trees