Fact 1: Condensation causes clouds to form. Fact 2: With increasing cloud blocking the sun, temperatures drop considerably. Given the two facts above, answer the question "What causes sun blocking and temperature drops?" with the following options: - sweating - energy barrier - condensation - peachleaf willow - scattered light - global warming - Greenhouse gases - Dehydration
condensation

Fact 1: Producing thrust causes something to move. Fact 2: Another way to move a spacecraft is to thrust with gas jets. Given the two facts above, answer the question "what propels a spacecraft?" with the following options: - sunlight - energy - friction - photons - heat - moon - thrust - engine
thrust

Q: Fact 1: Agasoline lawn mower converts gasoline into motion. Fact 2: Oil and gasoline are fossil fuels. Given the two facts above, answer the question "What can convert fossil fuels into motion?" with the following options: - heat energy - to move people - lawn mowers - electric cars - fish - birds - vehicles - engines
A: lawn mowers

Question: Fact 1: Organs of excretion make up the excretory system. Fact 2: Excretion is a life process. Given the two facts above, answer the question "What is part of the life process?" with the following options: - firefighters - Chemical energy - bacteria - First responders - police - Organic compounds - Excretory system - oxidation reaction
Answer: Excretory system

*Question*
Fact 1: Viruses are usually considered to be nonliving. Fact 2: Viruses Viruses are the smallest agents of disease. Given the two facts above, answer the question "What is considered nonliving?" with the following options: - Leptospirosis - major threat to health - smallest agent of disease - harmful substances - direct damage to the lungs - Food poisoning - an area swollen with pus - loses an electron
**Answer**
smallest agent of disease

(Question)
Fact 1: Mutation creates new genetic variation in a gene pool. Fact 2: Frequency of Mutations Mutations are rare events. Given the two facts above, answer the question "how frequent are new genetic variations in a gene pool?" with the following options: - rare - four - Summer - years - CO 2 - three - albino - HIV
(Answer)
rare