Q: You are presented with the question "What sometimes falls as rain?" and the following answer choices: - Water vapor - Winter - trees - Metling snow - earth - soil - flooding - streams. Now knowing that clouds are formed by water vapor rising into colder regions of the atmosphere and condensing and eventually, the drops fall out of the cloud in the form of rain, choose the best answer.
A: Water vapor

Q: You are presented with the question "Some invertebrates may have which feature?" and the following answer choices: - invertebrate - fat - gills - exception - three - mollusk - complex - shell Now knowing that most mollusks have shells and mollusks are invertebrates and are no exception, choose the best answer.
A: shell

Q: You are presented with the question "What is a method for changing an object's shape?" and the following answer choices: - a prism - stasis - programmed - inertia - A computer - mechanical - origami - stabilization Now knowing that folding an object causes that object to change shape and origami figures are paper folding art projects, choose the best answer.
A: origami

Q: You are presented with the question "What means that rocks are eroded down again?" and the following answer choices: - flooding - rainfall - salt and water. - weathering - freezing - chilling - frosting - mines Now knowing that weathering means breaking down rocks from larger whole into smaller pieces by weather and erosion breaks the rock down again, and the cycle continues, choose the best answer.
A: weathering