Fact 1: Amphibians are the first true tetrapods, or vertebrates with four limbs. Fact 2: Modern classifications of the tetrapods rely on the structure of the skull . Given the two facts above, what are amphibians classified by?

OPTIONS:
- organ
- ovaries
- colors
- feet
- alleles
- genus
- skull
- Length

Answer: skull

Fact 1: Earthworms are important deposit feeders that help form and enrich soil. Fact 2: Earth stands for soil, dust or ground. Given the two facts above, an earthworm is an important?

OPTIONS:
- allow growth
- cleaner for earth
- Plant reproduction
- more abundant
- parasite
- Something that makes plants green
- predator
- deposit feeder for earth

Answer: deposit feeder for earth

Fact 1: Flagella help prokaryotes move. Fact 2: Sperms have flagella. Given the two facts above, sperms can help prokaryotes what?

OPTIONS:
- live
- work
- move
- form
- grow
- growth
- Energy
- fusion

Answer: move

Fact 1: The sun causes water to evaporate more quickly by adding heat. Fact 2: During the day, the earth is heated up by the sun. Given the two facts above, when does water evaporate more quickly?

OPTIONS:
- dry and hot
- salt and water.
- In October
- during the day
- at night
- In the morning
- hydration
- lowered energy cost

Answer:
during the day