(Question)
Fact 1: Increasing heat causes thermal expansion. Fact 2: Motion helps to increase body heat. Given the two facts above, answer the question "what causes thermal expansion?" with the following options: - power - Chimneys - Sun - motion - Energy. - sunlight - coal - energy
(Answer)
motion

(Question)
Fact 1: The number of rings in a tree trunk can be used to estimate the age of the tree. Fact 2: Tree rings are examined to learn the forest age and growth rate. Given the two facts above, answer the question "What can be used to estimate a forest's growth rate?" with the following options: - rings - fibers - bamboo - bark - crown - wind - soil - traits
(Answer)
rings

(Question)
Fact 1: Minerals are chemical elements that are essential for body processes. Fact 2: Minerals are substances found in soil. Given the two facts above, answer the question "Substances found where are chemical elements that are essential for body processes?" with the following options: - bottles - countertops - soil - pockets - store - moles - sugar - skin
(Answer)
soil