Fact 1: Hydrogen bonds cause water to expand when it freezes. Fact 2: Hydrogen bonds Hydrogen bonds are primarily electrostatic in origin. Given the two facts above, answer the question "What causes water to expand?" with the following options: - evaporation - Condensation - Generating heat - electrostatic - friction - heat energy - heat produced - wind and erosion
electrostatic

Fact 1: Ultraviolet light causes sunburn. Fact 2: Serious skin cancer is caused by sunburns in childhood. Given the two facts above, answer the question "What can develop as a result of too much exposure to ultraviolet light in childhood?" with the following options: - Sunflower syndrome - influenza - Hearing loss - hyperthyroidism - disease - symptoms - Lung cancer - Skin cancer
Skin cancer

Q: Fact 1: Pathogens can cause disease. Fact 2: Legionnaires' disease is a serious disease. Given the two facts above, answer the question "Pathogens can cause what?" with the following options: - smallpox - symptoms - killing insects - type 1 diabetes - a broken arm - Legionnaires' - plantar fasciitis - influenza
A: Legionnaires'

Question: Fact 1: Muscle contraction occurs when muscle fibers get shorter. Fact 2: Muscles in the upper arm called biceps are used to flex the arm. Given the two facts above, answer the question "what contracts when fibers get shorter?" with the following options: - strength - strong - h2o - bushes - density - wheat - firm hugs - biceps
Answer: biceps

*Question*
Fact 1: Seasons cause change to the environment. Fact 2: Weather changes from season to season. Given the two facts above, answer the question "weather cause change to the what" with the following options: - mouth of rivers - size of the ocean - temperature - earth's crust - The atmosphere - sunlight - environment - Quality of life
**Answer**
environment

(Question)
Fact 1: Phase changes do not change mass. Fact 2: Melting is a phase change. Given the two facts above, answer the question "What does melting not change? " with the following options: - energy - vapors - fats - mass - liquid - ligt - heat - copper
(Answer)
mass