Which two are examples of mechanical weathering mentioned in the article? A Freeze thaw, salt wedging
B Freeze thaw, river erosion
C. Freeze thaw, acid rain
D River erosion, salt wedging ​

Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels

Which layer will become saturated first when rain falls?