If telephones use radio waves for communication, then what waves does a telephone use? Answer choices: - unique - power - energy - fibers - sound - strong - Radio - two
Radio

If living things use reproduction to have children, then how do living things have children? Answer choices: - death - people - humans - babies - it needs them - reproduction - mitosis - production
reproduction

Q: If aswitch directs current, then what directs current? Answer choices: - streams - switch - rivers - squids - chemicals - streams. - hormones - spring
A: switch

Question: If arthropods are the largest phylum of animals without a backbone, then what are arthropods the largest phylum of? Answer choices: - humans - absorb light energy - converting mass to energy - fish - animals without a backbone - remains of prehistoric life - h2o - Earth orbiting the Sun
Answer: animals without a backbone

*Question*
If decomposition increases the amount of cations in the soil, then what gets increased in the soil from decomposition? Answer choices: - sugar - glycogen - energy - bushes - bamboo - cations - bacteria - Energy.
**Answer**
cations

If underground systems grow in width and length, then what grow in width and length.? Answer choices: - crocodiles - sedimentary rocks - vegetation - remains of prehistoric life - swamp vegetation - shrub beds - underground systems - loose dirt
underground systems