If insulated material can be used for keeping heat, then how can heat be kept? Answer choices: - an electric stove - exposed material - insulated material - hydration - permeable material - electricity - wet material - In the winter
insulated material

If pathogens have a negative impact on the body, then what has a negative impact on the body? Answer choices: - pathogens - medicines - antibiotics - smallpox - amoebae - viruses - smoking - antibodies
pathogens

Q: If when an electrical circuit has a path it can work properly, then what does an electric circuit need to work properly? Answer choices: - complete - a path - a piston - radio waves - engines - multiple paths - energy - heat
A: a path

Question: If chemical weathering of iron in rock causes rust, then rust of iron in rocks is a direct result of? Answer choices: - solar heating - high speed fall from space - Chemical energy - The area was once underwater - permineralization - Temperature - volcanic ejection - chemical weathering
Answer: chemical weathering

*Question*
If using a gasoline engine requires igniting gasoline, then if you want to use a gasoline engine, what must you do with the gasoline? Answer choices: - drain the gasoline - wash the gasoline - cool down the gasoline - move to different locations - adding heat - ignite the gasoline - vaporization - evaporation
**Answer**
ignite the gasoline

Q: If some invertebrates are protected by a hard shell on their backs, then what are some invertebrates protected by on their backs? Answer choices: - fur - parasites - barnacles - shells - coats - bones - bushes - Epidermis
A: shells