When triangle ABC is reflected across line AB, the image is triangle ABD. Why are segment AD and segment AC congruent?

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

Well, a and b together would be negative. b alone would also be negative.

To relate to humans in a relational humanly way.