Fact 1: Dehydrating food is used for preserving food. Fact 2: Foods usually were covered with copious quantities of salt or saturated salt brine, and the salt was allowed to infuse into the tissue while dehydrating the product. Given the two facts above, answer the question "What does salting food do to it?" with the following options: - decrease stamina - evaporation - hydration - Preserves it - Causes bacteria to spread - chemical changes - Causes it to rot - Cooks it
Preserves it

Fact 1: Harming an animal species has a negative impact on the population size of that species. Fact 2: Populations are the sub-units of species. Given the two facts above, answer the question "harming an animal species has a negative impact on the what?" with the following options: - sub-units of species - single-celled organisms - diet of species - most organisms - color of species - ancestors of species - Abnormal cell growth - Males and females
sub-units of species

Q: Fact 1: The emission of sulfur dioxide causes acid rain. Fact 2: Most sulfur dioxide comes from the combustion of oil and coal. Given the two facts above, answer the question "What causes acid rain?" with the following options: - burn - oil - coal - lung - DDT - tar - Cars - wind
A: oil

Question: Fact 1: Ozone depletion results in higher levels of UV radiation reaching Earth. Fact 2: Solar UV radiation levels are highest during the middle of the day. Given the two facts above, answer the question "Ozone depletion results in radiation levels that are highest when?" with the following options: - middle of the day - forest is destroyed - late evening - Under 32 degrees - middle of the night - Temperature changing - Plant growth is reduced - early morning
Answer: middle of the day

*Question*
Fact 1: Riding a bike does not cause pollution. Fact 2: City employees use bicycles on the job to save energy and reduce air pollution. Given the two facts above, answer the question "Riding a bike reduces what?" with the following options: - energy usage - Greenhouse gasses - acid rain - harmful substances - Greenhouse gases - temperature - prolactin release - storms
**Answer**
energy usage

Q: Fact 1: Conserving water can be used for survival in a dry environment. Fact 2: Cactuses exemplify water conservation. Given the two facts above, answer the question "What exemplify surviving in a dry environment?" with the following options: - babies - insects - ferns - traits - bamboo - cacti - bushes - bears
A: cacti