*Question*
Fact 1: Ants communicate with chemicals called pheromones. Fact 2: Pheromones are only found in insects. Given the two facts above, answer the question " insects communicate with what" with the following options: - wave in air - chemicals - Vibrates - Decibels - waves - speech - whistling - hand signals
**Answer**
chemicals

*Question*
Fact 1: Plants that are adapted to very dry environments are called xerophytes. Fact 2: Bromeliads and cacti are xerophytes. Given the two facts above, answer the question "What is adapted to very dry environments?" with the following options: - cacti - plants - alpacas - otters - toads - fish - polar bears - gasoline
**Answer**
cacti

*Question*
Fact 1: Many nucleotides bind together to form a chain called a polynucleotide. Fact 2: Nucleotides are the monomers that make nucleic acids. Given the two facts above, answer the question "what bind together to form a chain called a polynucleotide?" with the following options: - vinegar - Organic compounds - nucleic acid monomers - links - share properties - h2o - The bending of a ray of light - peachleaf willow
**Answer**
nucleic acid monomers

*Question*
Fact 1: Increasing heat causes thermal expansion. Fact 2: Liquid propane is used to heat hot air balloons. Given the two facts above, answer the question "How is liquid propane used in hot air ballooning?" with the following options: - lowered energy cost - The area was once underwater - to expand the balloon - energy of moving objects - activation energy - hydrogen and oxygen - It remains dormant - to move people
**Answer**
to expand the balloon