In general terms...How would you determine the type of any rock you find while walking around this world?

Only people in ap world history can can someone give me a question and a statement to present to the class about chapter 15,16,or17

Micheal wants to estimate how much it will cost him each month to own and maintain his car. which of the following costs should not be included in the calculations? routine maintenance? dealer fees? gas? loan payments? wouldn't it be dealer fees? ? idk in advance! : )

What property does soil or rock need to be permeable? a.)young b.)old c.)non porous d.)porosity