Answer:
D.A round-trip ride to school and back
Explanation:
A round-trip ride to school and back would produce a total Displacement of zero.
You start and stop at the same place.
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Material through which water flows is permeable. This material can be either natural or artificial. Naturally permeable material can be clean sand and gravel for example, or a sandstone and in the latter case the sandstone can have both porosity which is not synonymous with permeability as the pores must be connected to be permeable. An impermeable membrane could be used to line ditches for example to prevent leakage near mines.
A person with darker skin produces more melanin. Those are the dark brown pigments that come from your skin, hair, or eye color.
Hope that helps. -UF aka Nadia
Answer:
well childhood disease is diseases that happens in childhood like chickenpox and etc
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