You are presented with the question "What content increases melting points of solids?" and the following answer choices: - salt - Joules - water - fats - heat - glass - sugar - coal Now knowing that adding salt to a solid decreases the freezing point of that solid and water density decreases with temperature and increases with salt content, choose the best answer.
salt
You are presented with the question "what can be planted to have a positive impact on the ecosystem?" and the following answer choices: - maples - Species - plants - soil - seeds - animals - Echinoids - mushrooms Now knowing that planting trees has a positive impact on an ecosystem and some trees are maples, choose the best answer.
maples
Q: You are presented with the question "what can cause death?" and the following answer choices: - weathering - chemicals - Cars - respiration - viruses - flooding - digestion - Pesticides Now knowing that viruses cause many human diseases and infectious disease is the leading cause of human death worldwide, choose the best answer.
A: viruses
Question: You are presented with the question "Desertification implies what?" and the following answer choices: - contamination - dry conditions - permineralization - soil deposition - Decrease bodily water - humans disturb it - population movement - threatened Now knowing that erosion causes deposition and desertification implies soil erosion, choose the best answer.
Answer: soil deposition
*Question*
You are presented with the question "what are clouds formed from?" and the following answer choices: - water vapor - oxygen - Heat energy - heating liquids - evaporation - carbon dioxide - air - boiling Now knowing that water vapor cooling causes that water vapor to condense and clouds form by the condensation of water vapor, choose the best answer.
**Answer**
water vapor
You are presented with the question "What can cause infection?" and the following answer choices: - bacteria - seeds - influenza - disease - horses - viruses - chickenpox - bladders Now knowing that microorganisms can cause infections and bacteria are microorganisms that exist everywhere, choose the best answer.
bacteria