Fact 1: Insulated material can be used for keeping warm. Fact 2: Sunlight heats the ground, warming it up. Given the two facts above, answer the question "How can heat be kept?" with the following options: - an electric stove - exposed material - insulated material - hydration - permeable material - electricity - wet material - In the winter
insulated material

Fact 1: Disease-causing microbes have a negative impact on the body. Fact 2: Pathogens are microbes that cause disease. Given the two facts above, answer the question "What has a negative impact on the body?" with the following options: - pathogens - medicines - antibiotics - smallpox - amoebae - viruses - smoking - antibodies
pathogens

Q: Fact 1: When an electrical circuit is working properly , electrical current runs through that circuit. Fact 2: An electric circuit is the path of an electric current. Given the two facts above, answer the question "what does an electric circuit need to work properly" with the following options: - complete - a path - a piston - radio waves - engines - multiple paths - energy - heat
A: a path

Question: Fact 1: Chemical weathering causes iron in rock to oxidize. Fact 2: When iron oxidizes it produces iron oxide, more commonly referred to as rust. Given the two facts above, answer the question "Rust of iron in rocks is a direct result of " with the following options: - solar heating - high speed fall from space - Chemical energy - The area was once underwater - permineralization - Temperature - volcanic ejection - chemical weathering
Answer: chemical weathering

*Question*
Fact 1: Using a gasoline engine requires burning gasoline. Fact 2: When the fuel is ignited, it burns with oxygen. Given the two facts above, answer the question "If you want to use a gasoline engine, what must you do with the gasoline?" with the following options: - 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: Fact 1: Mollusks are invertebrates such as the common snail. Fact 2: Snails are protected by a hard shell on their backs. Given the two facts above, answer the question "What are some invertebrates protected by on their backs?" with the following options: - fur - parasites - barnacles - shells - coats - bones - bushes - Epidermis
A: shells