Problem:OPTIONS:
- simple genes
- simple processes
- epidermis and dermis
- simple ideas
- simple cells
- Veins and arteries.
- layers of fat
- food and shelter

Fact 1: All cells share some of the same structures and basic functions. Fact 2: Basically the process is pretty simple. Given the two facts above, all cells share some of the same structures and what?
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A: simple processes

Problem:OPTIONS:
- nektar
- lids
- energy
- sugar
- heat
- displays
- jars
- power

Fact 1: Melting is when solids are heated above their melting point. Fact 2: Softer melt point wax is used to produce an even burning candle. Given the two facts above, what allows candles to burn and wax to melt?
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A: heat

Problem:OPTIONS:
- hyperthyroidism
- heat energy
- permineralization
- acceleration
- flow of electrons
- friction
- kinetic energy
- chemical reaction

Fact 1: Force causes the speed of an object to increase. Fact 2: Acceleration is the increase in speed or velocity over a period of time. Given the two facts above, what can result when force acts on a moving object?
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A: acceleration

Problem:OPTIONS:
- medicine
- sun's heat
- heat
- hurtful words
- a pathogens
- parasites
- harmful substances
- Echinoderm.

Fact 1: Skin is used for protecting the body from harmful substances. Fact 2: Skin is a protective organ. Given the two facts above, what does skin help keep out?
****
A:
harmful substances