Q: Fact 1: Increasing heat causes thermal expansion. Fact 2: Heating by direct heat is usually too hot. Given the two facts above, what causes thermal expansion?

OPTIONS:
- Electrical energy
- energy of moving objects
- making an object hot
- cooling an object
- freezing an object
- chemical reaction
- global warming
- stretching an object

A: making an object hot

Q: Fact 1: Mollusks reproduce sexually. Fact 2: Interestingly, a squid is also a mollusk. Given the two facts above, how does a squid produce?

OPTIONS:
- Energy.
- photons
- voltage
- sexually
- Energy
- bioaerosols
- waves
- food

A: sexually

Q: Fact 1: Coral reefs provide food and shelter to many ocean organisms. Fact 2: Humans depend upon the life-support systems provided by the oceans. Given the two facts above, what do coral reefs provide for humans?

OPTIONS:
- Energy.
- support
- fuel
- Energy
- food
- destruction
- pain
- body water

A: support

Q: Fact 1: Information in an organism 's chromosomes cause genetic traits to be passed down to that organism 's offspring. Fact 2: DNA carries information. Given the two facts above, what cause genetic traits to be passed down to that organism 's offspring?

OPTIONS:
- RNA
- math
- SNPs
- gene
- p53
- skin
- DNA
- cells

A:
DNA