If salt content increases melting points of solids, then what content increases melting points of solids? Answer choices: - salt - Joules - water - fats - heat - glass - sugar - coal
salt

If planting maples has a positive impact on an ecosystem, then what can be planted to have a positive impact on the ecosystem? Answer choices: - maples - Species - plants - soil - seeds - animals - Echinoids - mushrooms
maples

Q: If viruses cause death, then what can cause death? Answer choices: - weathering - chemicals - Cars - respiration - viruses - flooding - digestion - Pesticides
A: viruses

Question: If desertification implies soil deposition, then desertification implies what? Answer choices: - contamination - dry conditions - permineralization - soil deposition - Decrease bodily water - humans disturb it - population movement - threatened
Answer: soil deposition

*Question*
If clouds are formed by water vapor, then what are clouds formed from? Answer choices: - water vapor - oxygen - Heat energy - heating liquids - evaporation - carbon dioxide - air - boiling
**Answer**
water vapor

If bacteria can cause infections, then what can cause infection? Answer choices: - bacteria - seeds - influenza - disease - horses - viruses - chickenpox - bladders
bacteria