What percentage of daughter isotope would exist in a sample containing 50 percent parent isotope?

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

It is a geological map.yes, there are faults on there, including normal faults and thrust faults.sedimentary rocks in  salt lake  indicates its geologic age is  middle to late jurassic.

I'm guessing  a. diverse  because it shows a wide variety of many things.