Who are we? 400 bce we don't know why they disappeared during a 50yr period the population nearly fell to zero most likely there were environmental changes that made area bad for farming possible that volcanoes erupted they left their mark by influencing the zapotec & the maya

Enumerate the set key performance indicators (kpis) of the uae to measure its performance against its targets of 2021.

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality.potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english

Toward the end of the roman empire, what caused a decrease in the use of coined money tell me now