If food is preserved by drying, then how is food preserved? Answer choices: - liquid - moistness - hydration - bacteria - mold - heat - Cooking - drying
drying

If rivers can better dissolve oxygen and nutrients than lakes, then what can better dissolve nutrients and oxygen? Answer choices: - lakes - SO2 - Raft - a solute - puddles - rivers - currents - lochs
rivers

Q: If incineration causes an object to combust, then what causes an object to combust? Answer choices: - heating liquids - friction - It gets heated up - incineration - heat energy - flow of electrons - Electrical energy - Energy.
A: incineration

Question: If extreme heat and pressure form a type of rock, then extreme heat and pressure form a type of what? Answer choices: - liquid - crater - oil - energy - ice - Injury - rock - jar
Answer: rock

*Question*
If caverns are formed from limestone, then what are caverns formed from? Answer choices: - storing water - streams - fossil fuels - limestone - streams. - Rocks - crust - mines
**Answer**
limestone

(Q).
If microorganisms cause food poisoning, then what causes food poisoning? Answer choices: - one celled organisms - water vapor - microorganisms - influenza - Pesticides - harmful substances - oxygen - poison
(A).
microorganisms