(Question)
You are presented with the question "contact between rocks over long periods of time causes rocks to be what?" and the following answer choices: - erosion - Loose - slippery - loose soil - homogenous - coiled - imbalanced - threatened Now knowing that contact between rocks over long periods of time causes rocks to smooth and underfoot, loose rocks make footing perilous, while smooth marblelike stones make it slippery, choose the best answer.
(Answer)
slippery

(Question)
You are presented with the question "what is smoothed by contact over long periods of time?" and the following answer choices: - shale - earth - eras - Roads - soils - water - clouds - ground Now knowing that contact between rocks over long periods of time causes rocks to smooth and sandstone, shale, and limestone are sedimentary rocks, choose the best answer.
(Answer)
shale

(Question)
You are presented with the question "What has a special excretory structure?" and the following answer choices: - Silk plants. - Insects. - a fish - animals - plants - Architecture structures. - barnacles - Corset structure. Now knowing that some arthropods have special excretory structures and all insects are arthropods, choose the best answer.
(Answer)
Insects.