Powering an electrical device with a battery requires a path for electricity to flow through a closed circuit, and an electrical current is a flow of electrons. Given these facts, powering a device with a battery requires a path for electrons to flow through among the following options: - electromagnetic energy - direct energy - rays or beams - hydrogen and oxygen - heat energy - a closed circuit - kinetic energy - an object
a closed circuit

Atape measure is used to measure length, and with a tape measure, find the dimensions of the room. Given these facts, measure the what of the room to find dimensions among the following options: - coordinates - length - density - size - matetials - two - feet - design
length

Q: Fossil fuels are formed from dead organisms over time, and eons are the largest divisions of the time scale. Given these facts, how long does it take for fossil fuels to be formed from dead organisms among the following options: - mostly - oil - Eons - Winter - three - Five - coal - two
A: Eons

Question: Aairplane is used for moving people across bodies of water, and oceans are large bodies of salt water which separates deposits of land. Given these facts, which of the following can be used to move people across salt water among the following options: - salt shaker - telekinesis - engines - bicycle - electricity - airplane - wind - animals
Answer: airplane

*Question*
Roundworms make up the phylum Nematoda, and also, nematoda and rotifera are important groups contributing to soils. Given these facts, where are roundworms useful in an ecosystem among the following options: - killing animals - soils - fields - bacteria - eating plants - wetland - food - alveoli
**Answer**
soils

Q: Excretion is the process of removing wastes and excess water from the body, and ketones are exhaled and excreted in urine. Given these facts, what is a process of removing wastes and excess water from the body among the following options: - hydration - urination - incontinence - trash can - vaporization - Cooking - body waste - Exfoliation
A: urination