Problem:OPTIONS:
- Energy
- fur and fat
- Motility
- bioaerosols
- four limbs
- pollen
- glucose
- Energy.

Fact 1: Most protists have motility. Fact 2: Protists are the simplest of eukaryotes. Given the two facts above, what do simple eukaryotes have?
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A: Motility

Problem:OPTIONS:
- heat
- fire
- steam
- carbon
- toxins
- oxygen
- fossil
- smoke

Fact 1: Coal is used for generating heat by burning. Fact 2: Chemical energy stored in coal is released as heat energy when the coal is burned. Given the two facts above, what does coal release?
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A: heat

Problem:OPTIONS:
- emptying
- O3
- copper
- flow
- motion
- stasis
- deletion
- energy

Fact 1: Aswitch is used to start the flow of current in an electrical circuit. Fact 2: An electrical current is the flow of electric charge. Given the two facts above, a switch is used to start the what of electric charge in an electrical circuit?
****
A: flow

Problem:OPTIONS:
- Make friends
- massive damage
- Create young
- Become prey
- flow of electrons
- reproduce
- Live shorter
- it needs them

Fact 1: Adult worms go through a major transformation to develop reproductive organs. Fact 2: Reproduction Organisms create young of their species by reproduction. Given the two facts above, why do adult worms go through a major transformation?
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A:
Create young