*Question*
Melting is when solids are heated above their melting point, and ice is a solid, it's cold and it's hard. Given these facts, melting occurs when ice is among the following options: - heating liquids - temperature changes - heat is produced - cooled - heated below melting point - frozen - heated above melting point - It gets heated up
**Answer**
heated above melting point

*Question*
Acavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone, and when caves contain connecting rooms, they are called caverns. Given these facts, what is one element used to create caves among the following options: - sunlight - heat energy - Calcium carbonate - hydrogen and oxygen - calcite - carbonic acid - less water - salinity
**Answer**
carbonic acid

*Question*
DNA contains genetic instructions for proteins, and RNA helps assemble the proteins, and rNA molecules deliver the DNA messages to the protein-manufacturing assembly line of the cells. Given these facts, dNA messages to proteins are manufactured by what among the following options: - RNA - DNA - HIV - cell - SNPs - gene - MTT - ATM
**Answer**
RNA

*Question*
Gills are used for breathing water by aquatic animals, and animals breathe in oxygen and breathe out carbon dioxide. Given these facts, how do aquatic animals get oxygen among the following options: - photosynthesis - gills - rivers - blood - solutes - lungs - streams - carbon transfer
**Answer**
gills