Fact 1: Arthropods are the largest phylum of invertebrates. Fact 2: Invertebrates are animals without a backbone. Given the two facts above, what are arthropods the largest phylum of?

OPTIONS:
- Something to move
- animals without a backbone
- Earth orbiting the Sun
- microorganisms
- absorb light energy
- converting mass to energy
- Generating heat
- remains of prehistoric life

Answer: animals without a backbone

Fact 1: Sporangia produce spores that develop into tiny, heart-shaped gametophytes. Fact 2: Inside each sporangia there are hundreds of spores. Given the two facts above, where do gametophytes come from?

OPTIONS:
- seeds
- trees
- spores
- plants
- pollen
- ferns
- fungi
- Flowers

Answer: spores

Fact 1: Food consists of organic molecules that store energy in their chemical bonds. Fact 2: Food People want pure food. Given the two facts above, something that who want pure consists of organic molecules?

OPTIONS:
- people
- drink
- humans
- potatoes
- chickens
- organ
- animals
- plants

Answer: people

Fact 1: Evaporation of sweat uses energy, and the energy comes from body heat. Fact 2: When sweat comes in contact with the skin it is cooled as the sweat evaporates. Given the two facts above, what evaporates from the skin?

OPTIONS:
- energy
- Water
- solutes
- h2o
- pus
- sweat
- rain
- phlegm

Answer:
sweat