To identify a rock which two characteristics do geologists study

Well they actually observe 3 things. The color, mineral composition and the texture.

Don’t use up to much of them it leads to pollution

Mexico has a host of environmental problems, including significant chemicalpollution  from factory discharges and waste dumping, but the main threat to itsbiodiversity  probably stems from  deforestation  and other natural habitat losses. forest habitat is lost for a number of reasons