If when enough heat energy is added to water, it becomes steam, then what causes water to become steam? Answer choices: - Condensation - movement of tectonic plates - Increasing pressure - an engine - evaporation - heating liquids - Reducing temperature - Adding heat energy
Adding heat energy

If plant reproduction requires insects and hummingbirds, then insects and hummingbirds are required for what to reproduce? Answer choices: - fish - bees - herds - growth - courtship - plants - mating - nutrients
plants

Q: If water can be boiled to remove harmful substances before drinking, then what can be done to water to remove harmful substances before drinking? Answer choices: - evaporation - vaporization - Dipping a magnet into it - hydration - Mixing in heavy metals - Cooking - Boiling it - Adding purified water to it
A: Boiling it

Question: If populations of the cause of influenza do not grow through cell division because they are not cells, then the cause of what doesn't grow by cell division? Answer choices: - drought - Influenza - resistance - adding heat - Leptospirosis - fungi - bacteria - heat produced
Answer: Influenza

*Question*
If green commuting can be accomplished through pushing on pedals, then green what can be accomplished through pushing on pedals? Answer choices: - commuting - Plants growth - walking - driving - Heart rate - running - horse-riding - Movement
**Answer**
commuting

If gases from burning coal and oil dissolving in water in the atmosphere can destroy soil, then gasses from burning coal can lead to what? Answer choices: - soil destruction - nuclear power - Electrical energy - Pollution - grass - flow of electrons - radio waves - heat energy
soil destruction