Problem:OPTIONS:
- bushes
- A seed
- The ocean
- An egg
- spring
- Tropical
- Sand
- pollen

Fact 1: The force of water against the seed coat causes a root to emerge from a seed. Fact 2: When the seeds are watered, they grow into a huge root, and then the root sprouts flowers. Given the two facts above, where do flowers come from?
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A: A seed

Problem:OPTIONS:
- Small things with a microscope
- gastropod shells
- members of their own species
- one celled organisms
- Something to move
- mitochondria
- rocks
- intestines

Fact 1: Most protists have motility. Fact 2: Protists are one celled organisms. Given the two facts above, what can have motility?
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A: one celled organisms

Problem:OPTIONS:
- Mutations
- rays or beams
- Genes
- radiation
- DNA
- Smoking
- Microscope
- Chemicals

Fact 1: Mutations may change the structure of a chromosome or just change a single nucleotide. Fact 2: DNA is made up of nucleotides. Given the two facts above, what can change the structure of DNA?
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A: Mutations

Problem:OPTIONS:
- leaves
- Energy
- arteries
- Energy.
- branches
- glucose
- acetic acid
- skull

Fact 1: Oxygen is essential for cellular respiration for all aerobic organisms. Fact 2: Arteries carry oxygen to tissues and organs. Given the two facts above, what are essential for cellular respiration?
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A:
arteries