If ice sculptures turn to liquid from heat energy, then what causes ice sculptures to turn to liquid? Answer choices: - UV rays - Snow - salt and water. - Heat energy - air cools - kinetic energy - Subzero temperatures - Water expanding
Heat energy
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If gravity pulls objects towards large objects that orbit stars, then what pulls objects towards large objects that orbit stars? Answer choices: - planets - wind - sun's heat - dust - gravity - asteroids - speed - forces
gravity
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If economy is affected by the average number of individuals per unit of area or volume, then what is affected by the average number of individuals per unit of area or volume? Answer choices: - goats - economy - cows - animals - vegetation - mammals - bushes - wind
economy
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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
ignite the gasoline
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