The main factor was the utilization of raised field agriculture. They would build these fields that had been artificially raised to a certain height along a flowing water source (mostly rivers but occasionally streams as well in some cases). When tropical weather patterns would cause said water sources to flood, instead of washing away the crops, it would act as irrigation for the raised fields. Securing a steady food source allowed the Mayans to support a large civilization in the tropical regions they called home.
Answer:
protects u from the other persons saliva, because the coronavirus isnt airborne you got to come in contact with it.
Explanation:
A mask doesnt protect your eyes and spit can hit your eyes, so you should be wearing a face shield with your mask