Were two geographical features that protect egypt from invaders.
mountains and a harborless seacoast
desert and mountains
desert and a harborless seacoast
plateau and desert

The answer here is the third one: Desert and a harborless seacoast. Is this one because the desert would kill them before they could get close to Egypt, unless you brought a lot of supplies.Hope this can help a lot 

Answerwide-open;

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