Fact 1: Dehydrating food is used for preserving food. Fact 2: Food is then dehydrated in slow oven or dehydrator. Given the two facts above, answer the question "How is food preserved?" with the following options: - liquid - moistness - hydration - bacteria - mold - heat - Cooking - drying
drying

Fact 1: Running water is better able to dissolve oxygen and nutrients than standing water. Fact 2: Large, warm rivers hold populations but few occur in cold running water. Given the two facts above, answer the question "What can better dissolve nutrients and oxygen?" with the following options: - lakes - SO2 - Raft - a solute - puddles - rivers - currents - lochs
rivers

Q: Fact 1: High temperatures can cause an object to combust. Fact 2: Incineration requires very high temperatures for efficient combustion. Given the two facts above, answer the question "What causes an object to combust?" with the following options: - heating liquids - friction - It gets heated up - incineration - heat energy - flow of electrons - Electrical energy - Energy.
A: incineration

Question: Fact 1: Extreme heat and pressure change rock into metamorphic rock. Fact 2: Metamorphic Rocks Metamorphic Rocks Metamorphic rocks are formed by pressure and heat. Given the two facts above, answer the question "extreme heat and pressure form a type of what?" with the following options: - liquid - crater - oil - energy - ice - Injury - rock - jar
Answer: rock

*Question*
Fact 1: Acavern is formed by carbonic acid in groundwater seeping through rock and dissolving limestone. Fact 2: Limestone caves are formed when acids attack and dissolve the calcite in limestone. Given the two facts above, answer the question "what are caverns formed from?" with the following options: - storing water - streams - fossil fuels - limestone - streams. - Rocks - crust - mines
**Answer**
limestone

(Q).
Fact 1: Microorganisms cause food to spoil. Fact 2: Food poisoning occurs when spoiled food is eaten. Given the two facts above, answer the question "What causes food poisoning?" with the following options: - one celled organisms - water vapor - microorganisms - influenza - Pesticides - harmful substances - oxygen - poison
(A).
microorganisms